Keith’s note: This video depicting NASA’s Shuttle-derived Sidemount Heavy Launch Vehicle concept was shown at the 17 June 2009 meeting of the Review of U.S. Human Space Flight Plans Committee in Washington DC by NASA Space Shuttle Program Manager John Shannon.
Video below

Biologist, Explorers Club Fellow, ex-NASA Space Biologist and Payload integrator, Editor of NASAWatch.com and Astrobiology.com, Lapsed climber, Explorer, Synaesthete, Former Challenger Center board member 🖖🏻