Detailed Instructions: In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Problem:Question: What is the radio callsign of the squadron Poindexter was serving as a department head of when he was selected for astronaut training. Passage 1:Poindexter was commissioned in the United States Navy following graduation from the Georgia Institute of Technology in 1986. After a short period of service at the Hypervelocity Wind Tunnel Facility, Naval Surface Weapons Center, White Oak, Maryland, Poindexter reported for flight training in Pensacola, Florida. He was designated a Naval Aviator in 1988 and reported to Fighter Squadron 124 (VF-124), Naval Air Station Miramar, California, for transition to the F-14 Tomcat. Following his initial training, Poindexter was assigned to Fighter Squadron 211 (VF-211), also at Miramar, and made two deployments to the Persian Gulf during Operations Desert Storm and Southern Watch. During his second deployment in 1993, he was selected to attend the Naval Postgraduate School/U.S. Naval Test Pilot School Cooperative Program. Following graduation in December 1995, Poindexter was assigned as a test pilot and Project Officer at VX-23, the Naval Strike Aircraft Test Squadron (NSATS) at NAS Patuxent River, Maryland. While at NSATS, Poindexter was assigned as the lead test pilot for the F-14 Digital Flight Control System where he logged the first carrier landing and catapult launch of an F-14 with the upgraded flight controls. He also flew numerous high angle of attack/departure tests, weapons separation tests and carrier suitability trials. Following his tour at Patuxent River, Poindexter reported to Fighter Squadron 32 (VF-32) at NAS Oceana, Virginia, where he was serving as a department head when he was selected for astronaut training.
 Passage 2:In December 1942 the Corps gained a Guards title and became the 3rd Guards Mechanised Corps. It fought at the Battle of Kursk as part of Steppe Front. In June 1944, for Operation Bagration, it was assigned to Chernyakhovsky's 3rd Belorussian Front as part of a Cavalry Mechanized Group which also included 3rd Cavalry Corps and was tasked to hit Bogushevsk in conjunction with 5th Army and 39th Army. Its units included 64th Guards Heavy Tank Regiment, which operated IS-2 heavy tanks while fighting as part of the 1st Baltic Front in the Šiauliai ('Shaulay') area during July 1944. It was then moved to the Far East and took part in the invasion of Manchuria as part of the Transbaikal Front. The Corps, which gained the honorific Stalingrad-Krivorozhskaya, became 3rd Guards Mechanised Division in November 1945, and later 47th Guards Motor Rifle Division in 1957. It was finally disbanded on 27 November 1959 while serving with 5th Army in the Far East Military District at Dalnerechensk.
 Passage 3:While studying at Juilliard, Atkinson made his professional opera debut using his birth name 'David Burke' with the Opera Guild of Montreal (OGM) in January 1948 as Monterone in Giuseppe Verdi's Rigoletto. The following May he performed the role of the High Priest of Dagon in Camille Saint-Saëns's Samson and Delilah with the OGM. In September 1948 he made his Broadway debut under the name "John Atkinson" (Atkinson being his mother's maiden name) succeeding John Tyers as Franz Liszt in the musical revue Inside U.S.A. He remained with the production for the musical's first national tour after it closed in New York in February 1949. In 1951 he performed in several productions at the Paper Mill Playhouse, including the roles of Prince Franz in Victor Herbert's Sweethearts, Edvard Grieg in Robert Wright and George Forrest's Song of Norway, and Pierre Birabeau in Sigmund Romberg's The Desert Song. In June 1952 he portrayed Sam in the world premiere of Bernstein's Trouble in Tahiti at Berstein's Festival of the Creative Arts on the campus of Brandeis University to an audience of nearly 3,000 people. The following November he reprised the role of Sam in a nationally televised broadcast of Trouble in Tahiti presented by the NBC Opera Theatre (NBCOT). He would later sing the role of Sam again at the New York City Opera (NYCO) in 1958. In 1953 he performed the role of Don Jose in Georges Bizet's Carmen with Vera Bryner in the title role for NBCOT.

Solution:
1