A man has a vision test done by Remote Area Medical volunteers at the joint clinic with Operation Lone Star at Palmview High School in Mission, Texas August 6, 2014. Operation Lone Star started 16 years ago to help the guard prepare for emergencies such as hurricanes or pandemics in south Texas. Since then it has expanded its medical care component, treating thousands in a region that hugs the Mexican border, including some who come because no identification papers are required. Picture taken August 6, 2014. REUTERS/Shannon Stapleton (UNITED STATES - Tags: SOCIETY HEALTH POLITICS)