A Japanese attempt to reinforce Lae, New Guinea, is foiled by aircraft of the Southwest Pacific Air Forces during the Battle of the Bismarck Sea. Modified B-25s are used for the first time in low- level skip bombing techniques. More than 60 enemy aircraft are destroyed, and some 40,000 tons of Japanese shipping are sunk.
Secretary of Defense Austin Lloyd III met with his counterparts from Australia, Japan and the Philippines to discuss bolstering defense ties on May 2. The discussion included plans for joint F-35 exercises with Japan and Australia in the coming years.