Rolls-Royce Holdings
Northrop Grumman with partners BAE Systems, L-3 Communications, and Rolls-Royce Holdings, initially had intentions of proposing an updated version of the Hawk T2/128 for the T-X program. Northrop Grumman assumed prime responsibilities for the team in 2014. Northrop built the U.S. Air Force's current training aircraft, the T-38 Talon.