Memorandum for Commander Navy Installations Commander Naval Facilities Engineering Command Deputy Commandant for Installations and Logistics DoD Installation Visualization Tool (IVT) Operational Instruction dtd 1 JUN 2004., text, August 31, 2005; (https://digital.library.unt.edu/ark:/67531/metadc23493/m1/1/: accessed July 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .