Lockheed Martin Space Systems Corp., Sunnyvale, Calif., is being awarded a $312,200,000 cost-plus-incentive-fee contract modification for engineering support for the Advanced Extremely High Frequency (AEHF) satellite program from Dec. 1, 2011, to Dec. 31, 2014. Support is provided for on-orbit anomaly resolution and investigation, flight and payload software sustainment following the completion of on-orbit test, Networked AEHF System Tested tool sustainment, mission control familiarization, and development test. Additional supported tasks including hardware, software, training and logistics support, technical order maintenance, system security and information assurance engineering, coordination with the Milstar O&M contractor, satellite database updates for Milstar and AEHF, and on-site technical support for satellite operations at Schriever Air Force Base, Colo., and Vandenberg Air Force Base, Calif., as well as support for AEHF and Milstar combined constellation integration transition and test activities. Work will be performed at Redondo Beach, Calif., and is expected to be completed Dec. 31, 2014. The Air Force Space and Missile Systems Center, Military Satellite Communications Systems Directorate, Los Angeles, Calif., is the contracting activity