The Ground Based Strategic Deterrent solicitation invites bids on the weapon system’s engineering and manufacturing development phase and includes five production lot options to manufacture and deploy the weapon.

Trump’s backtracking comes one day after the U.S. announced it is officially removing Turkey from the F-35 program because of the nation’s purchase of the S-400.

The service is creating a replicated threat in a degraded and denied environment, Brig. Gen. Walter Rugen, Future Vertical Lift cross functional team director, told Aerospace DAILY July 16 at Ft. Myer in Arlington, Virginia.