A member from Texas developed severe headache, diarrhea, weakness, cough, altered mental status, and low oxygen saturation while trekking to Concordia Base Camp on Mount K2, Pakistan. The member’s expedition team contacted Global Rescue medical operations who recommended immediate evacuation by the fastest means after reviewing the case and the Concordia Base Camp nurse assessment. An airborne emergency medical field rescue was initiated, and the member was transported to a hospital in Skardu where he was examined, diagnosed and treated for severe altitude mountain sickness (AMS). The attending physician discharged the member following treatment and continued his recovery at his hotel in Skardu.