Northrop F-5F aggressor squadron is based in an air station that is designated as a superfund site due to what ?
Marine Aircraft Group 41:  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.
i don't know