The USS Hadley arrived at Okinawa on invasion day, 1 April 1945. The Hadley crew was on the lookout for Japanese submarines, mines, and aircraft 24 hours a day. The most dangerous duty was on the Radar Picket Line when stationed 50 miles out from Okinawa. Their early warning radar made the ship a target of kamikazes on 11 May. They shot down 23 planes, an all time Navy record for a single engagement.