The Air Force is modifying a contract with Lockheed Martin Space Systems Corp., Sunnyvale, Calif., for $102,513,429.>> This action is a change order that will acquire additional long lead materials for the Space Based Infrared Program.>> In addition, the modification will make changes to the Systems Requirements Review/System Design Review (SRR/SDR) criteria and change the Preliminary Design Schedule (PDR).>> -ends->