Most people on a spacewalk

The first flight of Endeavour, on the STS-49 mission, had a main goal of repairing the Intelsat VI satellite, which had partially failed. Retrieving the satellite proved problematic until Pierre Thuot, Richard Hieb and Thomas Akers performed a spacewalk together and were able to capture Intelsat VI by hand while mission commander Daniel Brandenstein delicately manoeuvred Endeavour to within a few feet of the stricken satellite. This is the only occasion to date that three people have all walked in space at the same time.