Question: Northrop F-5F aggressor squadron is based in an air station that is designated as a superfund site due to what ?
Sentence (from "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.
Relevant evidence: No