WAR
'(<a href="http://www.j-archive.com/media/2008-07-07_J_07.jpg" target="_blank">Sarah of the Clue Crew delivers the clue from Nellis Air Force Base in Las Vegas, NV.</a>)  In 1972, responding to poor combat performance in this war, the United States Air Force began the Aggressor program to provide adversaries during training'
the Vietnam War