"Yorktown"s dive bombers, led by William O. Burch, reached the Japanese carriers at 10:32, and paused to allow the slower torpedo squadron to arrive so that they could conduct a simultaneous attack. At this time, "Shōkaku" and "Zuikaku" were about apart, with "Zuikaku" hidden under a rain squall of low-hanging clouds. The two carriers were protected by 16 CAP Zero fighters. The "Yorktown" dive bombers commenced their attacks at 10:57 on "Shōkaku" and hit the radically maneuvering carrier with two bombs, tearing open the forecastle and causing heavy damage to the carrier's flight and hangar decks. The "Yorktown" torpedo planes missed with all of their ordnance. Two U.S. dive bombers and two CAP Zeros were shot down during the attack.