Douglas SBD Dauntless dive bomber flying in the waters off New Guinea.
A lot can be seen in this amazing photograph. The pilot is able to talk to his rear facing enlisted gunner via an ICS system, the gunner operates a twin .30 caliber machine gun for strafing and self defense. There are several white bombs painted just forward of the cockpit, each indicating a mission where ordnance was dropped. Forward of the painted bombs there is “OK” written on a fuselage panel, when maintainers work on aircraft they often use a colored grease pencil as a reminder that a part or whole aircraft is safe for flight. Forward of the “OK” writing is a round symbol, probably the squadrons logo.