Question: Which event was a surprise military strike by the Imperial Japanese Navy Air Service while Magruder Hill Tuttle was a senior officer in the United States Navy?
Related documents: [0]  [DOC] Magruder Hill Tuttle (July 21, 1908 – November 6, 1998) was an American rear admiral. Born and raised in Lenoir, North Carolina, Tuttle attended Duke University before entering the United States Naval Academy, from which he graduated in 1932. While at the academy, Tuttle played center on the football team for two years and was team captain in 1931. For his accomplishments in football at the academy, the "New York Sun" named him as the first-team center on their all-time Navy football team, selected in 1932. Following graduation, Tuttle was commissioned as an officer in the United States Navy. He was a senior officer at the Pearl Harbor naval base when it was attacked on December 7, 1941. During World War II, he served as a pilot and commanded three different squadrons at various times throughout the war. Tuttle also served in the Korean War and the Vietnam War. Other assignments included commander of Corry Field, commander of the USS "Philippine Sea", and deputy commander of the Pacific Missile Range. While stationed in Florida, Tuttle planned and founded the National Naval Aviation Museum. He died in Pensacola, Florida on November 6, 1998. [END] 
[1]  [DOC] The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service against the United States naval base at Pearl Harbor, Hawaii Territory, on the morning of December 7, 1941. The attack, also known as the Battle of Pearl Harbor, led to the United States' entry into World War II. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI, and as Operation Z during its planning. [END] 
Answer: 
attack on Pearl Harbor
attack on Pearl Harbor