The members of the team of United Arab Emirates Presidential Guard who attempted the summit yesterday turned back at 20,000′ (6094m), as one of their team had a severe headache that was apparently beyond the team’s ability to mitigate.  John Doyle, Hasan Al Naqbi, Ahmed Al Mazrouei and our guide Adam Smith are back at High Camp, regrouping and considering their options.  They were very close to the summit, but uncontrollable headaches are an indicator of Altitude Illness of some severity, and so the team chose the prudent course of action, which was to get as low as possible, to help relieve the symptoms.