The team deduces that Lane plans to detonate the two remaining nuclear weapons over the Siachen Glacier, contaminating the water supply of Pakistan, India, and China; with a third of its population affected, the world will descend into anarchy from which Lane hopes a new world order will emerge. Upon arrival in Kashmir, Hunt discovers Julia and her new husband are assigned to the medical camp, an arrangement made by Walker to increasing the pressure on Hunt. Lane activates a countdown on the nuclear weapons and gives the detonator to Walker who leaves in a helicopter, with Hunt in pursuit by commandeering another helicopter. Dunn, Stickell, and Faust stay behind to find the weapons on their own. Stickell finds the first bomb and works to understand its mechanism, but even with Julia volunteering her help they are unable to defuse it without the detonator. Faust and Dunn locate the second weapon and subdue Lane. After a lengthy chase, Hunt uses his helicopter to ram Walker's aircraft out of the sky. Walker fights with Hunt on the edge of a cliff and is killed. Hunt secures the detonator, allowing Stickell, Faust and Dunn to deactivate the bombs.