RESTON, VA (10/05/2015) - Benham is providing AE design for a prime contract held by Leidos with the U.S. Air Force (USAF) to perform architectural engineering services for a range of global programs. The multiple-award, firm fixed-price and cost-plus fixed-fee indefinite-delivery/indefinite-quantity (IDIQ) contract has a five-year base period of performance with two additional years for performance.