Colleagues identified the body as that of 49-year-old Johnny Yu, an Air Force reservist who was in Hawai'i with his unit for training, said HFD Capt. Emmit Kane.

Kane said rescue teams returned to Lanikai at daybreak. Searchers included the fire department helicopter and rescue specialists from Bellows Air Force Station.

A Bellows rescuer found Yu's body in a 15- to 20-foot crevice on the Kane'ohe side of the Mokulua islets at about 11:45 a.m., he said. The body was within 150 yards of where the man was last seen, Kane said.

Local Air Force official deferred questions to Travis Air Force Base, where the reservist's unit operates from. Military officials had no comment.

Kane said the man's wife has been notified.

Yu and a 26-year-old woman colleague from the same reservist unit had rented a tandem kayak from Hawaiian Watersport and were with a guide when a wave capsized the tandem kayak as they returned from the Mokulua Islands. The woman swan safely to the guide's kayak.