Combat operations begin in Operation Allied Force, the NATO air campaign against Yugoslavia. US aircraft fly about two-thirds of the 45,000 sorties, pressuring Serb leader Slobodan Milosevic to withdraw his forces from Kosovo.
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