at mission conclusion, wang traveled over 2.9 million miles in 110 earth orbits, and logged over 168 hours in space. by all accounts, it was a successful mission. however, the mission had a close call, sts-51b mission commander overmyer discovered while serving on the "challenger" disaster investigation team that 51-b had had a similar problem with its o-rings during the launch. morton thiokol engineers told sts-51b crew, don lind that "you all came within three-tenths of one second of dying".