There will be no potential for a climber or crew member to get lost or left behind because all climbing members, including guides and porters, will walk together in a group. When you need to contact with the office or a family member from a no-coverage location in an emergency, however, a satellite phone is the only and best option. We have a variety of communication devices, including mobile and satellite phones, so we can stay in touch with our climbers and crew members at all times. Because cell phones don't always operate high in the mountains, we rely on a satellite phone carried by the climbing leader for emergency communications.