Ellsworth Airmen attend a safety briefing to kick off the Air Force’s Critical Days of summer campaign at Ellsworth Air Force Base, S.D., May 24, 2012 as part of the base’s Safety Day prior to Memorial Day weekend. Among the many areas covered throughout the brief, one of several scheduled throughout the day, motor vehicle accidents and recreational injuries were the main areas of concern. (U.S. Air Force photos by Airman 1st Class Zachary Hada/Released)