T/Sgt. Pedro Closner died on March 10, 1945, in Kawaguchi, Saitama, Japan.
According to various sources on the internet, T/Sgt. Closner was the Flight Engineer of a B-29 Superfortress named "Zero Auer" (number 42-63569) assigned to the 28th Bomb Squadron, 19th Bomb Group stationed on Guam. On March 9, 1945, the aircraft embarked with its squadron on a bombing mission to Tokyo. Code name Meetinghouse #2.

Sometime in the early hours of the 10th, as the aircraft "approached the target, the flak was heavy, heat from the fires burning below caused heavy thermals and made the aircraft bounce around." The following reports were made:
"The plane was in a formation consisting of 7 to 8 planes and flew over from the direction of Tokyo at an altitude of approximately 2,000 meters, and was hit by flak and exploded in 3 sections." According to Missing Aircraft Report (MACR) #13822, when the aircraft, flying in formation over the city of Tokyo, was hit by anti-aircraft fire, "exploded in mid air and crashed in Aoki-cho, Kawagichi City, Saitama Prefecture." Further reports made stated that "ten crewmembers were killed in the crash. Two of the crew were reported to have bailed out," Cpl. Walter C. Grubb and 2Lt. Allington. They were captured POW. Both died later in prison. The remains of the crew that died were buried in Japanese cemeteries. T/Sgt. Closner was repatriated to the United States and buried at National Memorial Cemetery of the Pacific, Punchbowl, Hawaii.

The crew of the aircraft were:
A/C 1Lt Robert Auer
Co-Pilot: 2Lt Harold Curry
Pass. O/B: 1Lt. John H. Gerlach
Nav: 2Lt. William Lemmons Jr
Bomb: 2Lt. Homer Allington (Bailed out, captured and died 10 March 1945)
Radar: 2Lt Robert Booker
F/E: T/Sgt. Pedro Closner
Radio: Cpl. Jack Anderson
CFC: Cpl. George Micott
R/Gun: Cpl. Walter Grubb [bailed out and was captured; died May 25-26, 1945]
L/Gun: Cpl. Michael Chalanyca
T/Gun: Cpl. Edward Yuda