The BP agent should have let them go. The New River is nasty, it has been classified as one of the 10 most polluted waterways in North America. They wouldn't have gone too far once they left the water and headed out into the open desert. It is alot cooler here lately, but the sun will still beat you down, and these guys typicaly don't carry enough water.
is this where Barney went after he left Mayberry they must carry their 1 bullet in their pocket