WASHINGTON — The U.S. Air Force has awarded United Launce Alliance a $938 million contract modification for launch capability services for fiscal year 2015, the Pentagon announced Sept. 16.

ULA of Denver receives two separate lines of funding from the service as part of the Evolved Expendable Launch Vehicle program: one for launch vehicles and related services, and one to help cover overhead and engineering activities. The company launches nearly all of the U.S. national security missions on its Delta 4 and Atlas 5 rockets from Vandenberg Air Force Base in California and Cape Canaveral Air Station in Florida.

This modification is the latest in a series of contracts ULA gets on an annual basis to cover services not necessarily associated with a given launch, and which have been branded as a subsidy by ULA’s prospective competitors. The contract expires Sept. 30, 2015.

Mike Gruss covers military space issues, including the U.S. Air Force and Missile Defense Agency, for SpaceNews. He is a graduate of Miami University in Oxford, Ohio.