The Megadeth song actually alludes to where the remains of the alleged crashed UFO from Roswell, New Mexico on July 1947 were supposedly originally taken: Hangar 18 at Wright-Patterson Air Force Base (then known as Wright Field) in Dayton, Ohio. The supposed alien artifacts were later taken to the enigmatic Area 51 or Dreamland base in Nevada where they are said to remain to this day.
Another interesting Megadeth side-note: The cover art for the album that contains the song, Rust in Peace, shows the leaders of the world at the time (Mikhail Gorbachev and George Bush Sr. are clearly recognizable) inside an aircraft hangar, seated around Megadeth's mascot, Vic Rattlehead, who is standing over a cryogenic capsule that contains a frozen extraterrestrial and bearing what looks like a crystal that is glowing green. Element 115 perhaps?