SWEETGRASS, UNITED STATES
U.S. border patrol air interdiction agents Giles and Huston fly a patrol in a helicopter on the border...
U.S. border patrol air interdiction agents Chris Giles, supervisor, (L) and John Huston fly a patrol in a helicopter on the border of Montana and Alberta, at Sweetgrass, May 29, 2009. Agents on both sides of the border are getting ready for the new Western Hemisphere Travel Initiative that comes into effect June 1, 2009, requiring all people crossing to have (WHTI) compliant government documentation. REUTERS/Todd Korol (UNITED STATES POLITICS)