United States of America
The United States of America are located in North America. It borders Canada and Mexico. It is 9,826,630 km2 (3,794,066 sq mi) in size and has an estimated population of 306 million.
Two park Rangers
Ford Crown Victoria and Chevrolet Tahoe Park Ranger, Yellowstone park August 2012.
Park Rangers boat
National Park Service Park Ranger boat, Yellowstone park August 2012.
U.S. Park Ranger
Chevrolet Tahoe Park Ranger, Grand Teton National park August 2012.