The goal of the shuttle program was to put people in space on a regular basis, and in the shuttle's early days, NASA was roundly mocked for flight scrubs and other delays. Managers felt pressure to get Challenger off the launch pad even despite frigid temperatures. This was also partly due to timing with subsequent missions, which were to launch important planetary probes. Despite mythology to the contrary, there was no political pressure from President Reagan or anything like that--but launch pressures were real. So were rampant communication failures, which "permitted internal flight safety problems to bypass key Shuttle managers," in the words of the post-accident Rogers Commission. Among many changes to the program after the disaster, NASA committed to a more realistic, less frequent shuttle launch schedule.