Question: The 337th Flight Test Squadron (337 FLTS) was most recently part of the 46th Test Wing and based at McClellan Air Force Base, a former United States Air Force base located in the North Highlands area of Sacramento County, in which US state?

full_context: Document 1: McClellan Air Force Base: McClellan Air Force Base (1935–2001) is a former United States Air Force base located in the North Highlands area of Sacramento County, 7 mi northeast of Sacramento, California.
Document 2: McClellan AFB Annex: McClellan Air Force Base Annex #1 ("McClellan Anx #1") was a military installation near McClellan Air Force Base in Contra Costa County, California, that was active from 28 November 1951 to 2 July 1956. Strategic Air Command operated an (call sign "Sacramento Bomb Plot") just outside the base at Whitney and Eastern Avenues.
Document 3: 31st Test and Evaluation Squadron: The 31st Test and Evaluation Squadron (31 TES) is a United States Air Force unit, assigned to the 53d Test and Evaluation Group, stationed at Edwards Air Force Base, California. The 31 TES is an Air Combat Command (ACC) tenant unit at Edwards, providing personnel to support combined test and evaluation on Air Force weapons systems.
Document 4: Sacramento Mather Airport: Sacramento Mather Airport (IATA: MHR, ICAO: KMHR, FAA LID: MHR) , also known as simply Mather Airport, is a county-owned public-use airport located 10 nautical miles (19 km) east of the central business district of Sacramento, in Sacramento County, California, United States. It is located on the site of the former Mather Air Force Base which was closed in 1993.
Document 5: 343d Wing: The 343d Wing is an inactive United States Air Force unit. Its last assignment was with Pacific Air Forces at Eielson Air Force Base, Alaska, where it was inactivated on 20 August 1993. The unit was formed at Eielson as the 343d Composite Wing and activated in October 1981 to replace the 5010th Combat Support Group. It operated both fighter and forward air control aircraft. In 1991, it also became the administrator for periodic Exercise Cope Thunder operations, which moved to Alaska from the Philippines after the eruption of Mount Pinatubo resulted in the evacuation of units from Clark Air Base When the wing was inactivated, it was replaced at Eielson by the 354th Fighter Wing.
Document 6: McClellan Park, California: McClellan Park is a census-designated place in Sacramento County, California. McClellan Park sits at an elevation of 69 ft . The 2010 United States census reported McClellan Park's population was 743. It is the site of the former McClellan Air Force Base, closed by the federal government in 2003.
Document 7: Mather, Sacramento County, California: Mather is a census-designated place in Sacramento County, California. Mather sits at an elevation of 108 ft . The 2010 United States census reported Mather's population was 4,451. It is the site of the former Mather Air Force Base, closed by the federal government in 1993.
Document 8: 337th Flight Test Squadron: The 337th Flight Test Squadron (337 FLTS) was most recently part of the 46th Test Wing and based at McClellan Air Force Base, California. It performed depot acceptance testing until being inactivated with the closure of McClellan AFB on 13 July 2001.
Document 9: 417th Flight Test Squadron: The 417th Flight Test Squadron is an inactive United States Air Force squadron. It was last assigned to the 412th Operations Group at Edwards Air Force Base, California, where it was inactivated on 14 February 2012. The squadron was first activated in 1989 as the 6517th Test Squadron and conducted flight testing of the McDonnell Douglas C-17 Globemaster III until it was inactivated in 1995 as the 417th Test Squadron. It was reactivated in 2006 and performed ground and flight testing on the Boeing YAL-1A until 2012.
Document 10: Aerospace Museum of California: The Aerospace Museum of California is an aviation museum located in North Highlands, California on the grounds of the former McClellan Air Force Base. It features displays of authentic military and civilian aircraft as well as space vehicle replicas. It preserves the history and mission of this former base as well as those of neighboring bases like Beale (active) and Mather (closed) Air Force Bases. McClellan Air Force Base closed in 2001 and became McClellan Airfield, a civil aviation airport.
Document 11: 46th Test Wing: The 46th Test Wing is an inactive wing of the United States Air Force last based at Eglin Air Force Base, Florida. The wing's 46th Test Group was a tenant unit at Holloman Air Force Base, New Mexico.
Document 12: 46th Test Group: The 46th Test Group was a United States Air Force unit active from 1992 to 2012. It was last active with 46th Test Wing, at Eglin Air Force Base, Florida. The 46th Test Group was stationed as a tenant unit at Holloman Air Force Base, New Mexico, throughout its existence. It was inactivated on 18 July 2012, being replaced by the 96th Test Group in an administrative reorganization.
Document 13: Mather Air Force Base: Mather Air Force Base (Mather AFB) was a United States Air Force Base, which was closed in 1993. It was located 12 mi east of Sacramento, on the south side of U.S. Route 50 in Sacramento County, California. Mather Field was one of 32 Air Service training camps established after the United States entry into World War I in April 1917.
Document 14: 357th Fighter Squadron: The 357th Fighter Squadron (357 FS) is part of the 355th Fighter Wing at Davis-Monthan Air Force Base, Arizona. It operates Fairchild Republic A-10 Thunderbolt II aircraft training pilots for close air support missions.
Document 15: K. I. Sawyer Air Force Base: K. I. Sawyer Air Force Base is a decommissioned U.S. Air Force installation in Marquette County, Michigan, south of the city of Marquette. Near the center of Michigan's Upper Peninsula, the base operated for nearly forty years and closed in 1995. The county airport, Sawyer International, now occupies a portion of the base and has scheduled airline flights and some general aviation activity. The area of the former base is now an unincorporated community and a census-designated place for statistical purposes known as K. I. Sawyer AFB
ground_truth: California