This American thrust triggered a strong Japanese reaction; on 19 June, the Japanese Fleet launched more than 400 planes against the invasion fleet and the covering carrier force. In the ensuing air battle, known to American pilots as the "Marianas Turkey Shoot," more than 300 enemy planes were shot down. While "San Jacinto"s planes were achieving their most one-sided victory of the war, her gunners helped to shoot down the few attackers able to get near the American ships. Then, at dusk, Admiral Mitscher dispatched an all-carrier attack after the retreating enemy fleet. The night recovery of the returning planes was accomplished amid considerable confusion. Reportedly, a Japanese carrier plane attempted a landing approach on "San Jacinto", only to be waved off by the landing signal officer because its hook was not down.