The 12th edition of “NASA’s Implementation Plan for Space Shuttle Return to Flight and Beyond” will be released at 9 a.m. EDT, Thursday, June 22 at:

http://www.nasa.gov/shuttle

The implementation plan is periodically updated and demonstrates NASA’s progress in safely returning space shuttles to flight. This edition includes information about decisions regarding the shuttle’s external fuel tank. The updates also provide a status of work being done for the upcoming shuttle mission, designated STS-121.

Information about NASA’s Space Shuttle Program, STS-121 and previous versions of the implementation plan are available on the Web site listed above.