An Air Force helicopter Saturday flew out to rescue a rookie musher suffering from hypothermia and possibly shock while competing in the marathon Iditarod sled dog race across Alaska, officials said.

Four mushers, or sled dog drivers, stopped racing to help save Michael Madden, 27, who began suffering from serious heat loss far from help while on the Iditarod Trail."He's halfway between the end of the world and nowhere," said Iditarod race manager Jack Niggemyer.

An HH-3 helicopter launched by the Elmendorf Air Force Base rescue coordination center reached the suffering musher and a rescue crew was working to stabilize him and fly him to a medical facility, said Sgt. Ann Proctor.

Madden, of North Pole, Alaska, near Fairbanks, was competing in his first Iditarod.