AEDC awards new Test Operations and Sustainment contract Published June 10, 2015 By Jason Austin AEDC/PA Arnold Air Force Base, Tenn -- The contracting office at Arnold Engineering Development Complex (AEDC) awarded the Test Operations and Sustainment contract; this contract will ensure AEDC remains the nation's ground test and evaluation facility of choice... today and tomorrow. National Aerospace Solutions, LLC (NAS), Reston VA, a joint venture between Bechtel National, Inc., Sierra Lobo, Inc., and GP Strategies Corp., was awarded a cost-plus-award-fee contract valued at $1.5 billion. NAS will perform work supporting unique test operations and sustainment of the over $10 billion worth of infrastructure at the world's largest and most complex flight simulation test and evaluation complex. The period of performance is eight years (one base year, three one-year option periods, two one-year award term periods, and two additional one-year option periods) in addition to a 90-day phase-in period. The phase-in period is set to begin July 1, with performance beginning October 1.