USS "Halloran" (DE-305) was a "Evarts"-class destroyer escort named by the United States Navy after William Ignatius Halloran, born on 23 July 1915, at Cleveland, Ohio, enlisted in the Naval Reserve as an apprentice seaman on 14 August 1940.
 Commissioned Ensign on 12 June 1941, he was assigned to Naval Air Station, San Pedro, California, and later to USS "Arizona" .
 Ens. Halloran was among those lost in the "Arizona" at Pearl Harbor on 7 December 1941.
USS "Darby" (DE-218), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Ensign Marshall E. Darby (1918–1941), who fell overboard, while serving aboard the battleship USS "Oklahoma" , during the Japanese attack on Pearl Harbor on 7 December 1941.
USS "James E. Craig " (DE-201), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Lieutenant Commander James Edwin Craig (1901-1941), who was killed in action aboard the USS "Pennsylvania" during the Japanese attack on Pearl Harbor on 7 December 1941.
USS "Scott" (DE-214), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Machinist's Mate First Class Robert R. Scott (1915–1941, who was killed in action during the Japanese attack on Pearl Harbor on 7 December 1941, while serving aboard the battleship USS "California" .
 He was posthumously awarded the Medal of Honor for his heroism.
USS "Neuendorf" (DE-200), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Seaman First Class William Frederick Neuendorf (1916–1941), who was killed in action aboard the USS Nevada, as gun captain of No. 6 A.A. gun, gave an example of leadership, skill, and bravery that is remarked upon by all who observed it during the Japanese attack on Pearl Harbor on 7 December 1941.
 He was commended posthumously "for distinguished devotion to duty and extraordinary courage and disregard for his own safety[,]" and was the most junior sailor mentioned specifically for distinguished conduct in the after action report of the USS Nevada regarding the attack on Pearl Harbor.
Pearl Harbor is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu.
 Much of the harbor and surrounding lands is a United States Navy deep-water naval base.
 It is also the headquarters of the United States Pacific Fleet.
 The U.S. government first obtained exclusive use of the inlet and the right to maintain a repair and coaling station for ships here in 1887.
 The attack on Pearl Harbor by the Empire of Japan on December 7, 1941, was the immediate cause of the United States' entry into World War II.
USS "O'Neill" (DE-188) was a "Cannon"-class destroyer escort in the United States Navy.
 She was named for Ensign William Thomas O'Neill, Jr., killed on 7 December 1941, during the attack on Pearl Harbor, while serving aboard USS "Arizona" .
USS "Jordan" (DE-204), a "Buckley"-class destroyer escort of the United States Navy, was named in honor of Lieutenant Julian Bethune Jordan (1904-1941), who was killed in action aboard the USS "Oklahoma" during the Japanese attack on Pearl Harbor on 7 December 1941.
USS "Bowers" (DE-637/APD-40), a "Buckley" class destroyer escort of the United States Navy, was named in honor of Ensign Robert K. Bowers (1915-1941), who was killed in action aboard the battleship USS "California" during the Japanese attack on Pearl Harbor on 7 December 1941.
USS "Austin" (DE-15), was an "Evarts"-class destroyer escort of the United States Navy during World War II.
 The ship was named for Chief Carpenter John Arnold Austin (1905-1941) who was killed in action on board USS "Oklahoma" during the attack on Pearl Harbor by Japanese forces on 7 December 1941, and was posthumously awarded the Navy Cross.

Question: USS "Halloran" is a destroyer escort, of the United States Navy, named for William Ignatius Halloran, who died where, on 7 December 1941?
Answer: Pearl Harbor