United States. Department of Defense. Executive Correspondence – Letter dtd 06/23/05 to BRAC Commission R&A Director Frank Cirillo from DDR&E Technical Joint Cross-Service Group Executive Director Alan Shaffer, letter, July 1, 2005; (https://digital.library.unt.edu/ark:/67531/metadc17357/m1/1/: accessed November 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .