09 August 2015 at 2237 GMT the GEOS International Emergency Response Coordination Center (IERCC) received a 911/SOS alert from a DeLorme inReach device in Sequoia National Park.   IERCC personnel contacted local emergency services and informed them of the activation. Park rangers responded to the location and assisted a 55 year old male suffering from altitude sickness. Park rangers helped the individual hike out to a secure location.