"Hangar 18" is a song by American heavy metal band Megadeth from the 1990 album Rust in Peace. UFO conspiracy theories, or possibly Hangar 18, the 1980 film based on those theories, inspired drummer Nick Menza to write the lyrics. Shortly thereafter, frontman Dave Mustaine composed the bulk of the music. The intro is a rapidly strummed version of the D-minor arpeggio that Mustaine wrote for the Metallica instrumental track "The Call of Ktulu", which was the final Metallica music he was credited for. Hangar 18 is located at Wright-Patterson Air Force Base near Dayton, Ohio, and it is speculated that an alien aircraft was brought there from Roswell in 1947. The song reached number #25 on the Irish Singles Chart, also reached number #26 on the UK Singles Chart.