Lars is a 15-pound Jack Russell terrier whose size means that he's too tiny to be deployed – it would be dangerous for him to be in a combat situation because he's so small. He was supposed to be schooled as a drug dog, but was mistakenly trained to be an explosive detector dog. So rather than combat situations, Lars has worked on missions for the president and for the UN, making sure there aren't explosives in the area. Lars' handler, Cameron Frost, says Lars loves water bottles and will chew on one whenever he finds one.

U.S. Navy photo by Petty Officer Second Class Paul D. Williams