 Cain issued the ominous "Lock the doors" command, in a calm voice but a tear running down his cheek, initiating contingency procedures in mission control for the first time since the Space Shuttle "Challenger" disaster 17 years earlier.Born in Dubuque, Iowa, Cain earned a Bachelor of Science from Iowa State University in Ames, Iowa, in 1988.As of September 2015, Cain was serving as the Chair of the Exploration Systems Development (ESD) Standing Review Board, reporting directly to the Associate Administrator for HEOMD at NASA Headquarters in Washington, D.C., as well as the entire Agency leadership staff.