The ninth space shuttle mission (STS-9) is launched. Mission Commander John W. Young becomes the first person to make six spaceflights, and Columbia is the first spacecraft to be launched with a crew of six. The flight is also the first to use the European Spacelab module.
Navy Adm. Samuel J. Paparo Jr. assumed leadership of the U.S. Indo-Pacific Command, succeeding Navy Adm. John Aquilino at a change of command ceremony, urging action amid China's “increasing intrusive and expansionist claims,” on May 3