A Grumman F4F-4 Wildcat fighter (Bureau # 5244) takes off from USS Yorktown (CV-5) on combat air patrol, during the morning of 4 June 1942. This plane is Number 13 of Fighting Squadron Three (VF-3), flown by the squadron Executive Officer, Lieutenant (Junior Grade) William N. Leonard. Photographed by Photographer Second Class William G. Roy, from the ship's forecastle. Note .50 caliber machinegun at right and mattresses hung on the lifeline for splinter-protection. Official U.S. Navy Photograph, now in the collections of the National Archives.