World War II: Off the coast of Japan, a dive bomber hits the aircraft carrier USS Franklin, killing 724 of her crew. Badly damaged, the ship is able to return to the U.S. under her own power.

USS Franklin (CV/CVA/CVS-13, AVT-8), nicknamed "Big Ben," was one of 24 Essex-class aircraft carriers built during World War II for the United States Navy, and the fifth US Navy ship to bear the name. Commissioned in January 1944, she served in several campaigns in the Pacific War, earning four battle stars. She was badly damaged by a Japanese air attack in March 1945, with the loss of over 800 of her crew, becoming the most heavily damaged United States aircraft carrier to survive the war. Movie footage of the actual attack was included in the 1949 film Task Force starring Gary Cooper.

After the attack, she returned to the U.S. mainland for repairs, missing the rest of the war; she was decommissioned in 1947. While in reserve, she was reclassified as an attack carrier (CVA), then an antisubmarine carrier (CVS), and finally an aircraft transport (AVT), but was never modernized and never saw active service again. Franklin and Bunker Hill (damaged by two kamikazes) were the only Essex-class carriers not to see active service as aircraft carriers after World War II. Franklin was sold for scrap in 1966.

A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy for the bomb it drops. Diving towards the target simplifies the bomb's trajectory and allows the pilot to keep visual contact throughout the bomb run. This allows attacks on point targets and ships, which were difficult to attack with conventional level bombers, even en masse.After World War II, the rise of precision-guided munitions and improved anti-aircraft defences—both fixed gunnery positions and fighter interception—led to a fundamental change in dive bombing. New weapons, such as rockets, allowed for better accuracy from smaller dive angles and from greater distances. They could be fitted to almost any aircraft, including fighters, improving their effectiveness without the inherent vulnerabilities of dive bombers, which needed air superiority to operate effectively.