You can see the dog's breath - it's cold!
Navy SEAL dog went to Pak raid for Osama - I figure to be used in case OBL went underground in a hidey hole - they would 'release the hound'.
Still can't figure out what mission a dog in freezing water would be. Sniffing blood in water?
I think these trained dogs would be more effective in sniffing out bombs than TSA feeling you up or getting x-ray'd - tongue in cheek article on dogs sniffing passengers behind a 'glory hole' is at