1983 - A suicide truck bomber attacks the Marine barracks at airport, killing 241 (220 Marines, 18 Sailors, and 3 soldiers).
1983 - Operation Urgent Fury (, ) begins.
Maritime Reporter & Engineering News was founded by John J. O'Malley (1905-1980) in 1939, and today ranks as the world's largest audited trade publication in the world serving the maritime industry,
Today in U.S. Naval History - July 21
1823 - After pirate attack, Lt. David G. Farragut leads landing party to destroy pirate stronghold in Cuba.
1944 - Invasion and recapture of Guam begins.
The Australian Navy’s three remaining Landing Craft Heavy auxiliary vessels put on a proud display of thanks to the Cairns community, sailing in formation from the city’s harbor this morning.