DIVULJE TRAINING BASE, Croatia – U.S. Air Force Staff Sgt. Travis Rolstad, 1st Combat Communications Squadron, Ramstein Air Base, Germany, ensures an air conditioning unit is working properly for Medical Training Exercise in Central and Eastern Europe 2008 (MEDCEUR 08) April 29. Fifteen nations are participating in the exercise May 2 through 15. The exercise focuses on mass-casualty training scenarios and humanitarian aid in response to crises situations. More than 400 multi-nationals are attending the exercise in support of the Partnership for Peace initiative. (U.S. Air Force photo/Staff Sgt. Kristin Ruleau)