I'm certain that Huebolt is dead wrong.
"Apple's Federal CustomersAnd here is the official FermiLab support page for the FermiLab Apple Mac IT department.
Apple's three biggest federal customers are NASA, the Department of Energy, and the National Institutes of Health. At NASA, the biggest customers, as I recall, are NASA Goddard in Maryland and NASA Ames at Moffett Field in California. The Department of Energy list includes all of the major U.S. National Laboratories such as Los Alamos, Lawrence Livermore, Oak Ridge, and some minor ones. These sites typically have thousands of Macs. Of course, they also typically have tens of thousands of PCs.
There are also many other small U.S. research and policy sites that have a boatload of Macs and refresh them periodically: Loyal customers include the RAND corporation in Santa Monica, Mitre in Boston, the National Center for Atmospheric Research (NCAR) in Boulder, Colorado and the FBI. The U.S. Army is also a good customer for Apple. (As I've mentioned before, the USAF and the U.S. Navy are not so much.)"Source: October 14th, 2009, The Mac Observer.
GMTA. You beat me by seconds...