L3 Communications Vertex Aerospace LLC, Madison, Miss., is being awarded a $12,111,176 contract modification for trainer maintenance services. The location of the performance is Sheppard Air Force Base, Texas, and Naval Air Station Pensacola, Fla. Work is expected to be completed by Sept. 30, 2013. The contracting activity is 82 CONS/LGCA, Sheppard Air Force Base, Texas. (Source: DoD, 10/01/12)