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Congressional Research Service Reports
- Navy Virginia (SSN-774) Class Attack Submarine Procurement: Background and Issues for Congress
- This report provides background information and oversight issues for Congress on the Virginia class nuclear-powered attack submarine (SSN) program. The two Virginia-class boats requested for procurement in FY2013 are the final two in a group of eight covered by a multiyear procurement (MYP) arrangement for the period FY2009-FY2013. Issues for Congress include whether or not to approve the MYP arrangement request, whether to restore procurement of a second Virginia-class boat in FY2014, and the Virginia-class procurement rate in general. digital.library.unt.edu/ark:/67531/metadc84041/
- The Berry Amendment: Requiring Defense Procurement to Come from Domestic Sources
- This report examines the original intent and purpose of the Berry Amendment and legislative proposals to amend the application of domestic source restrictions, as well as potential options for Congress. digital.library.unt.edu/ark:/67531/metadc84035/
- Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress
- The Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations. Under MDA and Navy plans, the number of BMD-capable Navy Aegis ships is scheduled to grow from 24 at the end of FY2011 to 36 at the end of FY2018. Issues for Congress for FY2013 include the reduction under the proposed FY2013 budget in the ramp-up rate for numbers of BMD-capable Aegis ships over the next few years; the U.S. economic impact of shifting four Aegis ships to Rota, Spain; U.S. vs. European naval contributions to European BMD; the lack of a target for simulating the endo-atmospheric (i.e., final) phase of flight of China's DF-21 anti-ship ballistic missile; the capability of the SM-3 Block IIB Aegis BMD interceptor; and technical risk in the Aegis program. digital.library.unt.edu/ark:/67531/metadc86656/
- Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress
- This report presents background information and potential oversight issues for Congress on the Navy's Arleigh Burke (DDG-51) and Zumwalt (DDG-1000) class destroyer programs. Decisions that Congress makes concerning these programs could substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc87273/
- Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress
- This report presents background information and potential oversight issues for Congress on the Navy's Arleigh Burke (DDG-51) and Zumwalt (DDG-1000) class destroyer programs. Decisions that Congress makes concerning these programs could substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc87272/
- The Army's Ground Combat Vehicle (GCV) Program: Background and Issues for Congress
- This report looks at the history and current need for a Ground Combat Vehicle (GCV) program. Potential issues for Congress include the role and need for the GCV in a downsized Army that will likely have fewer heavy brigade combat teams (HBCTs). digital.library.unt.edu/ark:/67531/metadc86572/
- Navy Virginia (SSN-774) Class Attack Submarine Procurement: Background and Issues for Congress
- This report provides background information and oversight issues for Congress on the Virginia class nuclear-powered attack submarine (SSN) program. The two Virginia-class boats requested for procurement in FY2013 are the final two in a group of eight covered by a multiyear procurement (MYP) arrangement for the period FY2009-FY2013. Issues for Congress include whether or not to approve the MYP arrangement request, whether to restore procurement of a second Virginia-class boat in FY2014, and the Virginia-class procurement rate in general. digital.library.unt.edu/ark:/67531/metadc93983/
- F-35 Joint Strike Fighter (JSF) Program
- The F-35 Joint Strike Fighter (JSF), also called the Lighting II, is a new strike fighter being procured in different versions by the Air Force, Marine Corps, and Navy. The F-35 program is the Department of Defense's (DOD's) largest weapon procurement program in terms of total estimated acquisition cost. This report details the Obama Administration's proposed FY2010 defense budget requests for F-35 program funding and outlines the issues that Congress must consider when deciding whether to approve, reject, or modify the administration's funding requests. digital.library.unt.edu/ark:/67531/metadc87250/
- NATO Common Funds Burdensharing: Background and Current Issues
- This report gives an overview of the feasibility of burdensharing amongst North Atlantic Treaty Organization (NATO) member states due to the global financial crisis and defense budget cuts in many of the contributing nations. digital.library.unt.edu/ark:/67531/metadc87246/
- Defense: FY2012 Budget Request, Authorization and Appropriations
- This report discusses legislative action that applied the Budget Control Act (BCA)-mandated spending reduction to FY2012 defense funding legislation was taken by the Senate Appropriations Committee on September 7, 2011, when it adopted discretionary spending ceilings for each of its 12 subcommittees that required the Defense Subcommittee to cut $25.9 billion from the President's request for programs funded by the DOD Appropriations bill. On September 15, the Senate Appropriations Committee reported an amended version of the House-passed DOD Appropriations bill (H.R. 2219) that would cut $29.3 billion from the Administration request. digital.library.unt.edu/ark:/67531/metadc87182/
- Navy Ford (CVN-78) Class Aircraft Carrier Program: Background and Issues for Congress
- CVN-78, CVN-79, and CVN-80 are the first three ships in the Navy's new Gerald R. Ford (CVN- 78) class of nuclear-powered aircraft carriers (CVNs). This report provides background information and potential oversight issues for Congress on the CVN-78 program. digital.library.unt.edu/ark:/67531/metadc87361/
- Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress
- This report provides background information and issues for Congress on the Navy's proposal to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, FL. Transferring a CVN from Norfolk, VA, to Mayport would shift from Norfolk to Mayport the local economic activity associated with homeporting a CVN, which some sources estimate as being worth hundreds of millions of dollars per year. digital.library.unt.edu/ark:/67531/metadc87138/
- Navy Virginia (SSN-774) Class Attack Submarine Procurement: Background and Issues for Congress
- This report provides background information and oversight issues for Congress on the Virginia class nuclear-powered attack submarine (SSN) program. The two Virginia-class boats requested for procurement in FY2013 are the final two in a group of eight covered by a multiyear procurement (MYP) arrangement for the period FY2009-FY2013. Issues for Congress include whether or not to approve the MYP arrangement request, whether to restore procurement of a second Virginia-class boat in FY2014, and the Virginia-class procurement rate in general. digital.library.unt.edu/ark:/67531/metadc93981/
- Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress
- This report presents background information and potential oversight issues for Congress on the Navy's Arleigh Burke (DDG-51) and Zumwalt (DDG-1000) class destroyer programs. Decisions that Congress makes concerning these programs could substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc87270/
- Circular A-76 and the Moratorium on DOD Competitions: Background and Issues for Congress
- This report discusses the current moratorium on the conduct of Department of Defense (DOD) public-private competitions under Office of Management and Budget (OMB) Circular A-76 and issues for Congress. digital.library.unt.edu/ark:/67531/metadc83929/
- Circular A-76 and the Moratorium on DOD Competitions: Background and Issues for Congress
- This report discusses the current moratorium on the conduct of Department of Defense (DOD) public-private competitions under Office of Management and Budget (OMB) Circular A-76 and issues for Congress. digital.library.unt.edu/ark:/67531/metadc87147/
- The Berry Amendment: Requiring Defense Procurement to Come from Domestic Sources
- This report examines the original intent and purpose of the Berry Amendment and legislative proposals to amend the application of domestic source restrictions, as well as potential options for Congress. digital.library.unt.edu/ark:/67531/metadc84034/
- Peacekeeping/Stabilization and Conflict Transitions: Background and Congressional Action on the Civilian Response/Reserve Corps and other Civilian Stabilization and Reconstruction Capabilities
- This report provides background on the establishment of S/CRS, its functions, and its operations, as well as on the CRC. The report tracks S/CRS budget requests and congressional actions. It discusses four issues raised during the S/CRS years that may still be relevant for the CSO Bureau: S/CRS's effectiveness, the appropriate size for the CRC, flexible funding for stabilization operations, and funding for a reserve component. digital.library.unt.edu/ark:/67531/metadc84048/
- Peacekeeping/Stabilization and Conflict Transitions: Background and Congressional Action on the Civilian Response/Reserve Corps and other Civilian Stabilization and Reconstruction Capabilities
- In November 2011, the Obama Administration announced the creation of a new State Department Bureau of Conflict and Stabilization Operations to provide the institutional focus for policy and “operational solutions” to prevent, respond to, and stabilize crises in priority states. This bureau integrates the former Office of the Coordinator for Reconstruction and Stabilization (S/CRS). In December 2011, the Administration nominated Frederick D. Barton to two posts: the Assistant Secretary for Conflict and Stabilization Operations and the Coordinator for Reconstruction and Stabilization. The second session of the 112th Congress may wish to follow the progress of the CSO Bureau in furthering the work of S/CRS as part of appropriations and oversight functions. digital.library.unt.edu/ark:/67531/metadc87294/
- F-35 Alternate Engine Program: Background and Issues for Congress
- On December 2, 2011, General Electric and Rolls-Royce announced that they were ending development of the F136 alternate engine for the F-35, ending what had been a contentious and long-running battle of funding versus research and development. This report discusses issues of having only one engine supplier for the F-35, as well as funding issues for the program. digital.library.unt.edu/ark:/67531/metadc87152/
- Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress
- The planned size of the Navy, the rate of Navy ship procurement, and the prospective affordability of the Navy's shipbuilding plans have been matters of concern for the congressional defense committees for the past several years. The Navy's proposed FY2012 budget requested funding for the procurement of 10 new battle force ships. Issues for Congress include the appropriate future size and structure of the Navy in light of changes in strategic and budget circumstances, the sufficiency of the Navy's FY2012 30-year shipbuilding plan for achieving and maintaining the Navy's 313-ship goal, and the affordability of the FY2012 30-year shipbuilding plan. digital.library.unt.edu/ark:/67531/metadc84045/
- Navy Ford (CVN-78) Class Aircraft Carrier Program: Background and Issues for Congress
- This report provides background information and potential oversight issues for Congress on the CVN-78 program, which includes the CVN-78, CVN-79, and CVN-80 as the first three ships in the Navy's new Gerald R. Ford (CVN- 78) class of nuclear-powered aircraft carriers (CVNs). digital.library.unt.edu/ark:/67531/metadc87362/
- FY2012 National Defense Authorization Act: Selected Military Personnel Policy Issues
- This report focuses exclusively on the annual defense authorization process. It does not include language concerning appropriations, veterans' affairs, tax implications of policy choices, or any discussion of separately introduced legislation. digital.library.unt.edu/ark:/67531/metadc83972/
- The Army's Ground Combat Vehicle (GCV) Program: Background and Issues for Congress
- This report looks at the history and current need for a Ground Combat Vehicle (GCV) program. Potential issues for Congress include the role and need for the GCV in a downsized Army that will likely have fewer heavy brigade combat teams (HBCTs). digital.library.unt.edu/ark:/67531/metadc93856/
- Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress
- This report provides background information and issues for Congress on the Navy's proposal to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, FL. Transferring a CVN from Norfolk, VA, to Mayport would shift from Norfolk to Mayport the local economic activity associated with homeporting a CVN, which some sources estimate as being worth hundreds of millions of dollars per year. digital.library.unt.edu/ark:/67531/metadc83922/
- Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress
- This report provides background information and issues for Congress on the Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, and gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations Issues for Congress concerning the Aegis BMD program include demands for BMD capable Aegis ships, demands for Aegis ships in general, the U.S. economic impact of shifting four Aegis ships to Rota, Spain, U.S. vs. European naval contributions to European BMD, the capability of the SM-3 Block IIB Aegis BMD interceptor, and technical risk in the Aegis program. digital.library.unt.edu/ark:/67531/metadc84069/
- Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress
- This report provides background information and presents potential issues for Congress concerning the Navy's ship force-structure goals and shipbuilding plans. The planned size of the Navy, the rate of Navy ship procurement, and the prospective affordability of the Navy's shipbuilding plans have been matters of concern for the congressional defense committees for the past several years. Decisions that Congress makes on Navy shipbuilding programs can substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc84044/
- Defense: FY2012 Budget Request, Authorization and Appropriations
- This report discusses legislative action that applied the Budget Control Act (BCA)-mandated spending reduction to FY2012 defense funding legislation was taken by the Senate Appropriations Committee on September 7, 2011, when it adopted discretionary spending ceilings for each of its 12 subcommittees that required the Defense Subcommittee to cut $25.9 billion from the President's request for programs funded by the DOD Appropriations bill. On September 15, the Senate Appropriations Committee reported an amended version of the House-passed DOD Appropriations bill (H.R. 2219) that would cut $29.3 billion from the Administration request. digital.library.unt.edu/ark:/67531/metadc83970/
- Wartime Contracting in Afghanistan: Analysis and Issues for Congress
- Government contracting in Afghanistan and other wartime environments is different than contracting in peacetime. In peacetime, the goal of contracting is generally to obtain the good or service that is required. The measurements of success are generally getting the right good or service, on schedule, and at a fair price. In wartime, however-and particularly in a counterinsurgency environment-cost, schedule, and performance are often secondary to larger strategic goals of promoting security and denying popular support for the insurgency. digital.library.unt.edu/ark:/67531/metadc84001/
- Coast Guard Deepwater Acquisition Programs: Background, Oversight Issues, and Options for Congress
- This report provides background information and oversight issues for Congress on the Coast Guard's Deepwater acquisition programs for replacing and modernizing the service's aging fleet of deepwater-capable ships and aircraft. The Coast Guard's FY2012 budget appears to request $957.2 million in acquisition funding for Deepwater programs, including $271.6 million for aircraft, $512.0 million for surface ships and boats, and $173.6 million for other items. Congress's decisions on Deepwater acquisition programs could substantially affect Coast Guard capabilities and funding requirements, as well as contractors involved in these programs. digital.library.unt.edu/ark:/67531/metadc84071/
- Coast Guard Deepwater Acquisition Programs: Background, Oversight Issues, and Options for Congress
- This report provides background information and oversight issues for Congress on the Coast Guard's Deepwater acquisition programs for replacing and modernizing the service's aging fleet of deepwater-capable ships and aircraft. digital.library.unt.edu/ark:/67531/metadc87322/
- Coast Guard Deepwater Acquisition Programs: Background, Oversight Issues, and Options for Congress
- This report provides background information and oversight issues for Congress on the Coast Guard's Deepwater acquisition programs for replacing and modernizing the service's aging fleet of deepwater-capable ships and aircraft. The Coast Guard's FY2012 budget appears to request $957.2 million in acquisition funding for Deepwater programs, including $271.6 million for aircraft, $512.0 million for surface ships and boats, and $173.6 million for other items. Congress's decisions on Deepwater acquisition programs could substantially affect Coast Guard capabilities and funding requirements, as well as contractors involved in these programs. digital.library.unt.edu/ark:/67531/metadc94078/
- Defense: FY2012 Budget Request, Authorization and Appropriations
- This report discusses legislative action that applied the Budget Control Act (BCA)-mandated spending reduction to FY2012 defense funding legislation was taken by the Senate Appropriations Committee on September 7, 2011, when it adopted discretionary spending ceilings for each of its 12 subcommittees that required the Defense Subcommittee to cut $25.9 billion from the President's request for programs funded by the DOD Appropriations bill. On September 15, the Senate Appropriations Committee reported an amended version of the House-passed DOD Appropriations bill (H.R. 2219) that would cut $29.3 billion from the Administration request. digital.library.unt.edu/ark:/67531/metadc93882/
- Defense: FY2012 Budget Request, Authorization and Appropriations
- This report discusses legislative action that applied the Budget Control Act (BCA)-mandated spending reduction to FY2012 defense funding legislation was taken by the Senate Appropriations Committee on September 7, 2011, when it adopted discretionary spending ceilings for each of its 12 subcommittees that required the Defense Subcommittee to cut $25.9 billion from the President's request for programs funded by the DOD Appropriations bill. On September 15, the Senate Appropriations Committee reported an amended version of the House-passed DOD Appropriations bill (H.R. 2219) that would cut $29.3 billion from the Administration request. digital.library.unt.edu/ark:/67531/metadc93881/
- Department of Defense Trends in Overseas Contract Obligations
- The Department of Defense (DOD) has long relied on contractors to support military operations. Contractors provide the U.S. military with weapons, food, uniforms, and logistic services, and without contractor support, the U.S. would currently be unable to arm and field an effective fighting force. DOD spends more on federal contracts than all other federal agencies combined. digital.library.unt.edu/ark:/67531/metadc40162/
- Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress
- This report presents background information and potential oversight issues for Congress on the Navy's Arleigh Burke (DDG-51) and Zumwalt (DDG-1000) class destroyer programs. Decisions that Congress makes concerning these programs could substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc40189/
- Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress
- This report provides background information and issues for Congress on the Navy's proposal to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, FL. Transferring a CVN from Norfolk, VA, to Mayport would shift from Norfolk to Mayport the local economic activity associated with homeporting a CVN, which some sources estimate as being worth hundreds of millions of dollars per year. digital.library.unt.edu/ark:/67531/metadc40071/
- The Berry Amendment: Requiring Defense Procurement to Come from Domestic Sources
- This report examines the original intent and purpose of the Berry Amendment and legislative proposals to amend the application of domestic source restrictions, as well as potential options for Congress. digital.library.unt.edu/ark:/67531/metadc40183/
- Department of Defense Food Procurement: Background and Status
- Military food items, also known as subsistence items, are generally procured under the auspices of the Defense Logistics Agency (DLA), an agency of the Department of Defense (DOD) which provides worldwide logistics support for the U.S. military services. Under DLA, the Defense Supply Center (DCSP) is the inventory control point for food, clothing, textiles, medicines, medical equipment, general and industrial supplies and services for the military, their eligible dependents, and other non-DOD customers worldwide. This report will describe the origin, authority, and policy in military food procurement. digital.library.unt.edu/ark:/67531/metadc40266/
- Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress
- This report provides background information and issues for Congress on the Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, and gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations. Issues for Congress concerning the Aegis BMD program include whether to approve, reject, or modify MDA and Navy funding requests for the program, and whether to provide MDA or the Navy with additional direction concerning the program. Congress's decisions regarding the Aegis BMD program could substantially affect U.S. BMD capabilities and funding requirements, U.S. Navy ship force levels and operating patterns, and the defense industrial base. digital.library.unt.edu/ark:/67531/metadc40222/
- Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress
- This report provides background information and presents potential issues for Congress concerning the Navy's ship force-structure goals and shipbuilding plans. The planned size of the Navy, the rate of Navy ship procurement, and the prospective affordability of the Navy's shipbuilding plans have been matters of concern for the congressional defense committees for the past several years. Decisions that Congress makes on Navy shipbuilding programs can substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc40198/
- F-35 Joint Strike Fighter (JSF) Program: Background and Issues for Congress
- The F-35 Joint Strike Fighter (JSF), also called the Lighting II, is a new strike fighter being procured in different versions by the Air Force, Marine Corps, and Navy. The F-35 program is the Department of Defense's (DOD's) largest weapon procurement program in terms of total estimated acquisition cost. This report details the Obama Administration's proposed FY2010 defense budget requests for F-35 program funding and outlines the issues that Congress must consider when deciding whether to approve, reject, or modify the administration's funding requests. digital.library.unt.edu/ark:/67531/metadc40279/
- Navy SSBN(X) Ballistic Missile Submarine Program: Background and Issues for Congress
- This report discusses the Navy's plan to develop and design a class of 12 next-generation ballistic missile submarines, or SSBN(X)s, as replacements for the 14 Ohio class SSBNs currently in operation. The report explores certain related issues for Congress, including the affordability of the project and its potential impact on other Navy shipbuilding programs, alternatives to the program, and which shipyard or shipyards will build the proposed ships. digital.library.unt.edu/ark:/67531/metadc40090/
- Navy Virginia (SSN-774) Class Attack Submarine Procurement: Background and Issues for Congress
- This report provides background information and oversight issues for Congress on the Virginiaclass nuclear-powered attack submarine (SSN) program. The Navy's proposed FY2012 budget requests procurement funding for the 15th and 16th Virginia-class boats, and advance procurement (AP) funding for Virginia-class boats to be procured in future years. Decisions that Congress makes on procurement of Virginia-class boats could substantially affect U.S. Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc40192/
- Navy Ford (CVN-78) Class Aircraft Carrier Program: Background and Issues for Congress
- CVN-78, CVN-79, and CVN-80 are the first three ships in the Navy's new Gerald R. Ford (CVN- 78) class of nuclear-powered aircraft carriers (CVNs). This report provides background information and potential oversight issues for Congress on the CVN-78 program. digital.library.unt.edu/ark:/67531/metadc40245/
- Navy LPD-17 Amphibious Ship Procurement: Background, Issues, and Options for Congress
- The Navy's FY2011-FY2015 shipbuilding plan calls for procuring an 11th and final San Antonio (LPD-17) class amphibious ship in FY2012. This report discusses the procurement cost estimates of this ship, as well as related issues for Congress. digital.library.unt.edu/ark:/67531/metadc94145/
- Navy LPD-17 Amphibious Ship Procurement: Background, Issues, and Options for Congress
- The Navy's FY2011-FY2015 shipbuilding plan calls for procuring an 11th and final San Antonio (LPD-17) class amphibious ship in FY2012. This report discusses the procurement cost estimates of this ship, as well as related issues for Congress. digital.library.unt.edu/ark:/67531/metadc40234/
- Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress
- This report presents background information and potential oversight issues for Congress on the Navy's Arleigh Burke (DDG-51) and Zumwalt (DDG-1000) class destroyer programs. Decisions that Congress makes concerning these programs could substantially affect Navy capabilities and funding requirements, and the U.S. shipbuilding industrial base. digital.library.unt.edu/ark:/67531/metadc98051/
- None
- This report provides background information and issues for Congress on the Aegis ballistic missile defense (BMD) program. Issues for Congress concerning the Aegis BMD program include whether to approve, reject, or modify MDA and Navy funding requests for the program, and whether to provide MDA or the Navy with additional direction concerning the program. Congress's decisions regarding the Aegis BMD program could substantially affect U.S. BMD capabilities and funding requirements, U.S. Navy ship force levels and operating patterns, and the defense industrial base. digital.library.unt.edu/ark:/67531/metadc98082/
- Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress
- This report provides background information and issues for Congress on the Navy's proposal to homeport a nuclear-powered aircraft carrier (CVN) at Mayport, Florida. Transferring a CVN from Norfolk, Virginia, to Mayport would also shift the local economic activity associated with homeporting a CVN, which some sources estimate as being worth hundreds of millions of dollars per year. digital.library.unt.edu/ark:/67531/metadc97971/