Area 54 is an isolated facility in the Nevada desert belonging to the autonomous agency E.R.T.D.. On its exterior, Area 54 appears to be a private airstrip., but its three 'hangars' actually conceal a research installation that goes down many levels. Area 54 was active between the 1950s and 2003, when E.R.T.D. was shut down. For further information, see: E.R.T.D.