Remo Masima operates a remote-controlled helicopter from the base camp of the Trango Summit in northern Pakistan's Karakoram mountain range. – Photo by AP

A team member gets ready to operate a helicopter over the Trango Summit.- Photo by AP

Mammut, Peter Ortner and David Lama ascend the Trango Summit in northern Pakistan's Karakoram mountain range. When they reached the summit, a camera mounted to a small remote-controlled helicopter recorded stunning images of the trio surrounded by the Karakoram range. – Photo by AP

A team member prepares to fly a radio-controlled helicopter at the base of Trango Summit. – Photo by AP

A team member prepares to fly a radio-controlled helicopter at the base of Trango Summit. – Photo by AP

This photo is taken from a camera mounted to a remote-controlled helicopter showing Peter Ortner, Corey Rich and David Lama standing atop the Trango Summit. – Photo by AP

Mammut, Peter Ortner and David Lama walk on the Trango Summit in northern Pakistan's Karakoram mountain range while a remote-controlled helicopter flies over them. – Photo by AP