Question: Northrop F-5F aggressor squadron is based in an air station that is designated as a superfund site due to what ?

full_context: Document 1: VMAQT-1: Marine Tactical Electronic Warfare Training Squadron 1 (VMAQT-1) is a United States Marine Corps electronic warfare training squadron consisting of EA-6B Prowler jets. The squadron is based at Marine Corps Air Station Cherry Point, North Carolina and falls under the command of Marine Aircraft Group 14 (MAG-14) and the 2nd Marine Aircraft Wing (2nd MAW). The VMAQT-1 logo is the Banshee, an Irish mythological figure foretelling death. Its motto is “Tairngreacht Bas,” Gaelic for “Death Foretold.”
Document 2: Yuma International Airport: Yuma International Airport (IATA: YUM, ICAO: KNYL, FAA LID: NYL) is a joint use airport with civilian and military flight activity operated in conjunction with the U.S. Marine Corps via the Marine Corps Air Station Yuma. The airfield is located three nautical miles (6 km) south of the central business district of Yuma, a city in Yuma County, Arizona, United States. It is mostly used for military aviation, but is also served by one commercial airline and one aeromedical Medevac company as well as being used for general aviation activities.
Document 3: Marine Aircraft Group 14: Marine Aircraft Group 14 (MAG-14) is a United States Marine Corps aviation unit based at Marine Corps Air Station Cherry Point, North Carolina that is currently composed of four AV-8B Harrier squadrons, four EA-6B Prowler squadrons, one KC-130 squadron, a maintenance and logistics squadron, and a wing support squadron.
Document 4: VMA-513: Marine Attack Squadron 513 (VMA-513) was a United States Marine Corps attack squadron consisting of AV-8B Harrier (V/STOL) jets. Known as the "Flying Nightmares", the squadron was last based at Marine Corps Air Station Yuma, Arizona and fell under the command of Marine Aircraft Group 13 (MAG-13) and the 3rd Marine Aircraft Wing (3rd MAW). VMA-513 was decommissioned on 12 July 2013.
Document 5: HMLAT-303: Marine Light Attack Helicopter Training Squadron 303 (HMLAT-303), is a United States Marine Corps helicopter training squadron stationed at Marine Corps Base Camp Pendleton, California. Known as the "Atlas", HMLAT-303 trains newly commissioned Naval Aviators, conversion pilots, refresher pilots, and enlisted aircrew on the new Bell UH-1Y Venom and Bell AH-1Z Viper helicopter as well as the Bell AH-1W SuperCobra. It is part of Marine Aircraft Group 39 (MAG-39) and the 3rd Marine Aircraft Wing (3rd MAW).
Document 6: VMA-311: Marine Attack Squadron 311 (VMA-311) is a United States Marine Corps ATTACK squadron consisting of AV-8B Harrier (V/STOL) jets. Known as the "Tomcats", the squadron is based at Marine Corps Air Station Yuma, Arizona and falls under the command of Marine Aircraft Group 13 (MAG-13) and the 3rd Marine Aircraft Wing (3rd MAW).
Document 7: VMFT-401: Marine Fighter Training Squadron 401 (VMFT-401) is a United States Marine Corps Reserve fighter squadron flying the F-5N Tiger II. Known as the "Snipers", the squadron is the only adversary squadron in the Marine Corps, also is the first and only reserve squadron in the Marine Corps tasked to act as the opposing force in simulated air combat. They are based at Marine Corps Air Station Yuma and fall under the command of the 4th Marine Aircraft Wing and Marine Aircraft Group 41. VMFT-401 is a non-deployable unit.
Document 8: Marine Corps Air Station Yuma: Marine Corps Air Station Yuma or MCAS Yuma (ICAO: KNYL, FAA LID: NYL) is a United States Marine Corps air station which is the home to multiple squadrons of AV-8B Harrier IIs of the 3rd Marine Aircraft Wing, Marine Aviation Weapons and Tactics Squadron 1 (MAWTS-1), Marine Test and Evaluation Squadron 22 (VMX-22) and Marine Fighter Training Squadron 401 (VMFT-401), an air combat adversary squadron of the 4th Marine Aircraft Wing of the Marine Corps Reserve. It is a designated Superfund site due to a number of soil and groundwater contaminants, including asbestos.
Document 9: VFA-101: Strike Fighter Squadron 101 (VF-101), also known as the "Grim Reapers", is a United States Navy Fleet Replacement Squadron (FRS) based at Eglin AFB, Florida. After the West Coast FRS for the F-14 Tomcat, VF-124, was disestablished in the mid-1990s, VF-101 became the sole F-14 FRS. At the time it was based at NAS Oceana in Virginia. With the retirement of the F-14, VF-101 was deactivated in 2005. It was reactivated in 2012 and redesignated Strike Fighter Squadron 101 (VFA-101). Is is currently one of two F-35C Lightning II, FRS. It is based at Eglin AFB, Florida with the joint 33d Fighter Wing (33 FW) but is a subordinate unit of the U.S. Navy's Strike Fighter Wing, U.S. Pacific fleet.
Document 10: Marine Aircraft Group 41: Marine Aircraft Group 41 (MAG-41) is a United States Marine Corps reserve aviation unit based at Naval Air Station Joint Reserve Base Fort Worth, Texas that is currently composed of one F/A-18A+ squadron, one KC-130T squadron, an aviation logistics squadron, as well as detachments from wing support and air control squadrons. Following decommissioning of Marine Aircraft Group 46 in 2009, MAG-41 also assumed command responsibility for the geographically separated Northrop F-5F aggressor squadron based at Marine Corps Air Station Yuma, Arizona and a Boeing Vertol CH-46 squadron HMM-764 based at Edwards Air Force Base, California. HMM-764 transitioned to the MV-22B in 2013 and relocated to MCAS Miramar.
Document 11: VMU-1: Marine Unmanned Aerial Vehicle Squadron 1 (VMU-1) is an unmanned aerial vehicle squadron in the United States Marine Corps that operates the RQ-7 Shadow and RQ-21 Blackjack. They are based out of Marine Corps Air Station Yuma, Arizona and provide aerial surveillance for the I Marine Expeditionary Force. They fall under the command of Marine Aircraft Group 13 and the 3rd Marine Aircraft Wing
Document 12: 355th Fighter Squadron: The 355th Fighter Squadron is a United States Air Force unit stationed at Naval Air Station Joint Reserve Base Fort Worth, Texas. It is an active-duty associate unit administratively assigned to the 495th Fighter Group and operates aircraft assigned to the Air Force Reserve Command's 301st Fighter Wing. Prior to its reactivation in 2015, the unit's last assignment was that of a subordinate unit of the 354th Fighter Wing based at Eielson Air Force Base in Alaska, flying the Republic A/OA-10 Thunderbolt II aircraft. The squadron was inactivated on 15 August 2007 as a result of Base Realignment and Closure (BRAC) 2005.
Document 13: Marine Aircraft Group 13: Marine Aircraft Group 13 is a United States Marine Corps aviation unit based at Marine Corps Air Station Yuma that is currently composed of two McDonnell Douglas AV-8B Harrier II squadrons, one Lockheed Martin F-35B Lightning II squadron, an unmanned aerial vehicle squadron, a maintenance and logistics squadron, and a wing support squadron. The group falls under the command of the 3rd Marine Aircraft Wing and the I Marine Expeditionary Force.
Document 14: Marine Aircraft Group 40: Marine Aircraft Group 40 is a composite United States Marine Corps aviation unit that is based in Marine Corps Air Station Cherry Point and was deployed to Afghanistan in 2009. They served as the aviation combat element for 2nd Marine Expeditionary Brigade which was supporting Operation Enduring Freedom from spring 2009 through April 4, 2010 when they were relieved by the 3rd Marine Aircraft Wing (Fwd). The group is currently composed of two CH-53 squadrons, one light attack helicopter squadron, one AV-8B Harrier II squadron, one MV-22 Osprey squadron, one KC-130 tactical aerial refueling squadron, one unmanned aerial vehicle squadron and an aviation logistics squadron.
Document 15: VMA-214: Marine Attack Squadron 214 (VMA-214) is a United States Marine Corps fighter squadron consisting of AV-8B Harrier (V/STOL) jets. The squadron is based at Marine Corps Air Station Yuma, Arizona and is under the command of Marine Aircraft Group 13 (MAG-13) and the 3rd Marine Aircraft Wing (3rd MAW).
ground_truth: a number of soil and groundwater contaminants, including asbestos