Capt. Erskine Cook Jr. (right) familiarizes Romanian air force medical evacuation counterparts with equipment and procedures used to evacuate patients May 12, 2010, during Operation Carpathian Summer 2010, a joint exercise at Otopeni Airlift Base, Romania. Members of the U.S. and Romanian air forces joined together for a week-long exercise to build partnerships and enhance proficiency in working together. Captain Cook is an 86th Aeromedical Evacuation Squadron flight nurse. (U.S. Air Force Photo/Staff Sgt. Jocelyn Rich)