The Air Force awarded Orbital ATK [OA] a contract worth over $720 million for intercontinental ballistic missile (ICBM) propulsion subsystem support, the service said Thursday.

The cost-plus-fixed-fee, maximum ceiling contract is to provide sustaining engineering support and program management support services for the ICBM propulsion subsystem. The award is the result of a competitive acquisition with three offers received.

OrbitalATK logoThe contract’s main focus is to ensure that any modifications or changes to the propulsion subsystem will maintain and improve system-level performance, the Air Force said.

Contract work is to be performed at Corrine and Magna, Utah, and is expected to be complete by Nov. 4, 2016. Fiscal year 2016 operations and maintenance funds of over $6 million were obligated at the time of award.

The contracting activity is the Air Force Nuclear Weapon Center at Hill Air Force Base, Utah.