Jim Cast Headquarters, Washington, DC Aug. 18, 1999 (Phone: 202/358-1779) Dom Amatore Marshall Space Flight Center, Huntsville, AL (Phone: 256/544-0031) NOTE TO EDITORS: N99-45 X-VEHICLE BRIEFING SET FOR AUG. 24 Within a year, NASA and its industry partners will begin powered, unpiloted, reusable flights of the "X" technology demonstration programs and vehicles, designed to lead to safe, reliable and low-cost access to space after the turn of the century. A NASA-industry briefing will outline the status of the programs -- labelled X-34, X-33 and X-37 -- at 1 p.m. EDT Aug. 24. The briefing will feature NASA and industry program managers and will be carried live on NASA Television from the James E. Webb Auditorium at NASA Headquarters, 300 E St. SW, Washington, DC. The briefing will feature an overview by Gary Payton, Deputy Associate Administrator for Space Transportation Technology, NASA Headquarters, and status briefings by the following program participants: X-34: John London, Pathfinder Program Manager, NASA Marshall Space Flight Center, Huntsville, AL; Bob Lindberg, Vice President and X-34 Program Manager, Orbital Sciences Corp., Dulles, VA X-33: Gene Austin, X-33 Program Manager, Marshall Space Flight Center; Cleon Lacefield, Vice President and X-33 Program Manager, Lockheed Martin Skunk Works, Palmdale, CA X-37: Susan Turner, X-37 Program Manager, Marshall Space Flight Center; David Manley, X-37 Program Manager, The Boeing Company, Seal Beach, CA The briefing will be carried live on NASA Television, available on transponder 9C on the GE-2 satellite at 85 degrees West longitude, vertical polarization, frequency 3880 MHz, audio of 6.8 MHz. Two-way question-and-answer capability will be available for news media at participating NASA centers. -end-