L-3 Communications Vertex Aerospace LLC, Madison, Mississippi, is being awarded a $13,744,643 modification to a previously awarded indefinite-delivery requirements contract (N00019-13-D-0007) to provide logistics services for aircraft availability of 96 TH-57 aircraft. Services to be provided include pre-flighting and fueling of the aircraft, as well as safe for flight release for designated missions. Work will be performed at the Naval Air Station Whiting Field, Milton, Florida, and is expected to be completed in May 2015. No funds are being obligated at time of award. Funds will be obligated against individual delivery orders as they are issued. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.