Four SBDs were shot down by Zeros escorting the torpedo planes .
A Wildcat shot down one and 8 patrolling Yorktown SBDs destroyed three more as the Japanese torpedo planes descended to take attack position .
Four Yorktown SBDs were shot down by Zeros escorting the torpedo planes .
A Wildcat shot down one and 8 patrolling Yorktown SBDs destroyed three more as the Japanese torpedo planes descended to take attack position .