Get Out Of Dodge Meaning

(US, idiomatic) To leave, especially to leave a difficult or dangerous environment with all possible haste.

Example: 1988, "Hearings Before the Subcommittee on Public Lands, National Parks, and Forests of the Committee on Energy and Natural Resources, United States Senate, One Hundredth Congress," November 3 and 5, 1987, Volume 4, p. 94:
  The pulp mills, he predicts, "are going to just high-grade all the best trees and get the hell out of Dodge."
1999, Robert Forrest Burgess, The Cave Divers, ISBN 9781881652113, p. 298:
  When Jasper surfaced, Skiles though to himself, Woody will come through. He'll find the way. He always gets us out of predicaments like this. Now that he's back it's just a matter or gearing up, getting in the water and getting the hell out of Dodge.