L-3 Communications Corp., Madison, Miss., is being awarded a $53,002,714 indefinite-delivery requirements contract for logistics services support of the TH-57 aircraft fleet.  Services to be provided include repair and/or overhaul of aircraft, engines, avionics and related components.  Work will be performed at Naval Air Station Whiting Field, Milton, Fla., and is expected to be completed in June 2014.  No funds are being obligated at time of award.  Funds will be obligated against individual delivery orders as they are issued.  This contract was competitively procured via electronic request for proposals; five offers were received.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity (N00019-13-D-0007).