Scoreboard from the superstructure of USS Hugh W. Hadley documenting that the destroyer had vanquished 25 Japanese airplanes: 23 of the planes were downed in a period of 1 hour and 40 minutes on 11 May 1945 when the Hadley was serving as a picket ship off Okinawa.
Radar picket stations were naval early warning systems against air attacks. Sixteen picket stations were established around Okinawa, ready to eliminate Japanese suicide planes before they could endanger the American invasion forces. The kamikazes of the Okinawa campaign made up the largest kamikaze attack of the Pacific War. Hundreds of pilots died to sink nearly 30 ships and damage over 120 during the Okinawa campaign. Kamikaze attacks accounted for about 40% of the total casualties at Okinawa, with over 3,000 sailors dead and double the number of wounded.
