L-3 Communications Vertex Aerospace, Madison, Miss., is being awarded an $11,345,639 firm-fixed-price contract modification for trainer maintenance at Sheppard Air Force-Base, Texas, and satellite site at Naval Air Station Pensacola, Fla. This action is to exercise option period one, Oct. 1, 2011 through Sept. 30, 2012. 82nd Contracting Squadron/LGCA, Sheppard Air Force Base, Texas, is the contracting activity. (Source: DoD, 09/26/11)