The Air Force officially retired the SR-71 in 1990, but NASA would use two of them for research until 1997. Lockheed Martin is currently developing a successor to the SR-71 Blackbird, the SR-72, which may be tested in 2020. Read the full story from the Pensacola News Journal here.

Can the SR-71 be reactivated?

During 1988, the USAF retired the SR-71 largely for political reasons; several were briefly reactivated during the 1990s before their second retirement in 1998. NASA was the final operator of the type, retiring their examples in 1999.

Are any sr71s still flying?

The final shut down of the United States Air Force SR-71 program occurred on Jun 30th, 1999 at DET 2, Edwards AFB. All remaining SR-71s were transferred to NASA. The final SR-71 flight was made by 61-7980 on October 9th of the same year at the Edwards AFB open house air show.