USS O'Callahan (DE:FF 1051)

USS O'Callahan (DE/FF-1051) was a Garcia-class destroyer escort, later reclassified as a frigate, commissioned by the United States Navy in 1968. Named in honor of Chaplain Lieutenant Commander Joseph T. O’Callahan, a Medal of Honor recipient from World War II, the ship served extensively during the Cold War, conducting anti-submarine warfare operations and participating in training and goodwill missions across the Pacific. USS O'Callahan played a vital role in supporting U.S. naval presence, including operations off the coast of Vietnam in the early 1970s. She was decommissioned in 1989 and later transferred to the Pakistan Navy, where she served as PNS Aslat before being scrapped.