OTD…Aug. 18 and STS-68 abort

#OTD in 1989…Columbia launched with a classified communications satellite for the Defense Department

#OTD in 2012…Endeavour’s coast-to-coast ferryflight into retirement arrives at Edwards Air Force Base

#OTD in 1990…Columbia launched to retrieve NASA’s Long duration Exposure Facility (LDEF) on the longest Shuttle flight to date.