A Pakistan Army helicopter (top) carrying President Asif Ali Zardari, Army Chief General Ashfaq Kayani, and other officials fly over the site of an avalanche over Gayari camp near the Siachen glacier on April 18, 2012. Rescuers are still searching for nearly 140 soldiers buried by the mass of snow and rock at Gayari camp near the Siachen glacier, 4,000 metres above sea level. More than 450 rescuers are working at the site near the de facto border with India in the militarised region of Kashmir, though experts have said there is virtually no chance of finding any survivors. AFP PHOTO / AAMIR QURESHI (Photo credit should read AAMIR QURESHI/AFP/Getty Images)
