Question: In what region of Nevada is the Unmanned Aerial Vehicle Battlelab located?

full_context: Document 1: Crystal Springs, Nevada: Crystal Springs is a ghost town in the Pahranagat Valley region of Lincoln County, Nevada in the United States. The ghost town is located at the junction of State Route 318 and State Route 375 (Extraterrestrial Highway), just northwest of U.S. Route 93. It is a popular destination for passersby who want to visit the towns of Hiko and Rachel. The namesake of the ghost town, the Crystal Springs, lies nearby; it is a large group of marshes and springs along the White River. Crystal Springs provides irrigation for multiple nearby ranches and farms, some of which lie over 5 miles away from the springs.
Document 2: Spring Creek, Nevada: Spring Creek is a census-designated place (CDP) in central Elko County, in northeastern Nevada in the western United States. It mainly serves as a bedroom community for the businesses and industries in and around the nearby city of Elko. It is part of the Elko Micropolitan Statistical Area. The population was 12,361 at the 2010 census.
Document 3: Nellis Air Force Base: Nellis Air Force Base ("Nellis" colloq.) is a United States Air Force installation in southern Nevada with military schools and more squadrons than any other USAF base. Nellis hosts air combat exercises such as Exercise Red Flag and close air support exercises such as Green Flag-West flown in "Military Operations Area (MOA) airspace". associated with the nearby Nevada Test and Training Range (NTTR). The base also has the Combined Air and Space Operations Center-Nellis.
Document 4: Indian Springs, Nevada: Indian Springs is an unincorporated town and a census-designated place near Creech Air Force Base in northwestern Clark County, southwestern Nevada.
Document 5: Peterson Air Force Base: Peterson Air Force Base is a U.S. Air Force Base that shares an airfield with the adjacent Colorado Springs Municipal Airport, also having the North American Aerospace Defense Command (NORAD) and United States Northern Command (USNORTHCOM) headquarters. Developed as a World War II air support base for Camp Carson, the facility conducted Army Air Forces training and supported Cold War air defense centers at the nearby Ent Air Force Base, Chidlaw Building, and Cheyenne Mountain Complex. The base has been the location of the Air Force Space Command headquarters since 1987 and has had NORAD/NORTHCOM command center operations since the 2006 Cheyenne Mountain Realignment placed the nearby Cheyenne Mountain Complex centers on standby.
Document 6: Lovelock Aerial Gunnery Range: Lovelock Aerial Gunnery Range was a World War II facility in two Nevada areas used for "aerial gunnery, strafing, dive bombing [and] rocket fire". By 21 November 1944, the Lovelock Range had been approved by the Secretary of the Navy to be developed for Naval Air Station Fallon, and on 13 January 1945, "Lovelock Air to Air" began when "leased under the Second War Powers Act". By February 1945, land was being acquired for the North Range in the Black Rock Desert which was 1122 that included 64.4 of "Patented" (leased private) land. The South Range in the Granite Springs Valley was 2436 , and in March 1945 "1920 Acres more" were added.
Document 7: Indian Springs, Montana: Indian Springs is a census-designated place (CDP) in Lincoln County, Montana, United States. The population was 31 at the 2010 census.
Document 8: Creech Air Force Base: Creech Air Force Base ("Creech" colloq.) is a United States Air Force (USAF) command and control facility in Clark County, Nevada used "to engage in daily Overseas Contingency Operations …of remotely piloted aircraft systems which fly missions across the globe." In addition to an airport, the military installation has the Unmanned Aerial Vehicle Battlelab, associated , and unmanned aerial vehicles of the type used in Afghanistan and Iraq. Creech is the aerial training site for the USAF Thunderbirds and "is one of two emergency divert airfields" for the Nevada Test and Training Range.
Document 9: March Air Reserve Base: March Air Reserve Base (IATA: RIV, ICAO: KRIV, FAA LID: RIV) (March ARB), previously known as March Air Force Base (March AFB) is located in Riverside County, California between the cities of Riverside and Moreno Valley. It is the home to the Air Force Reserve Command's 4th Air Force (4 AF) Headquarters and the host 452d Air Mobility Wing (452 AMW), the largest air mobility wing of the 4th Air Force. In addition to multiple units of the Air Force Reserve Command supporting Air Mobility Command, Air Combat Command and Pacific Air Forces, March ARB is also home to units from the Army Reserve, Navy Reserve, Marine Corps Reserve, California Air National Guard and the California Army National Guard. For almost 50 years, March AFB was a Strategic Air Command base during the Cold War.
Document 10: Warm Springs Natural Area: The Warm Springs Natural Area, also known as the Warm Springs Ranch, is located near the Moapa Indian Reservation in Clark County, Nevada, at an elevation of 2123 ft . The 1179 acre area is owned by the Southern Nevada Water Authority (SNWA). The area is a natural oasis in the Mojave Desert. The oasis is fed by close to 24 natural warm springs and contains many naturally occurring California fan palms ("Washingtonia filifera"), creating an ecosystem normally limited to the "low" Colorado Desert and so unique to the "high" Mojave Desert. The springs are the headwaters for the Muddy River.
Document 11: U.S. Air Force Test Pilot School: The U.S. Air Force Test Pilot School (USAF TPS) is the Air Force's advanced flight training school that trains experimental test pilots, flight test engineers, and flight test navigators to carry out tests and evaluations of new aerospace weapon systems and also other aircraft of the U.S. Air Force. This school was established on 9 September 1944 as the Flight Test Training Unit at Wright-Patterson Air Force Base (AFB) in Dayton, Ohio. To take advantage of the uncongested skies, usually superb flying weather, and the lack of developed zones in the event of crashing, the test pilot school was officially moved to its present location at Edwards Air Force Base in the northwestern Mojave Desert of Southern California on 4 February 1951.
Document 12: 556th Test and Evaluation Squadron: The 556th Test and Evaluation Squadron is a United States Air Force unit. It is assigned to the 53d Test and Evaluation Group at Creech Air Force Base, Nevada, and conducts unmanned aircraft testing.
Document 13: Rachel, Nevada: Rachel is a census-designated place (CDP) in Lincoln County, Nevada, United States. As of the 2010 census it had a population of 54. As the closest habitation to the Nellis Air Force Range and Area 51, Rachel enjoys a modest celebrity, particularly among aviation enthusiasts and UFO hunters. North of the town is the Quinn Canyon Range, which has the ghost town of Adaven.
Document 14: Goodsprings, Nevada: Goodsprings is an unincorporated community in Clark County, Nevada, United States. The population was 229 at the 2010 census.
Document 15: 42d Attack Squadron: The 42d Attack Squadron of the United States Air Force flies General Atomics MQ-9 Reaper Unmanned aerial vehicles and is currently stationed at Creech Air Force Base near Indian Springs, Nevada. The 42d oversees the training and combat deployment of aerial vehicle and sensor operators assigned to the Reaper. All aircraft will employ the AN/AAS-52 Multi-Spectral Targeting System developed by Raytheon.
ground_truth: southwestern