Lenoir and Allen were to perform a spacewalk, the first of the Shuttle program, to test newly developed space suits. The space suits were developed as cheaper and less complicated alternatives to the Apollo versions. The test was delayed by one day due to Lenoir succumbing to motion sickness. Then a poorly functioning oxygen regulator in Lenoir's suit and a broken recirculation fan in Allen's caused them to cancel the extravehicular activity (EVA) entirely. It was the first time in the history of the space program that an EVA had been cancelled due to space suit issues.