U.S. Air Force Airman 1st Class Robert Bridges, 86th Medical Squadron biomedical equipment technician, takes apart and inspects a circulatory assist unit at Landstuhl Regional Medical Center, Germany, Oct. 27, 2017. A circulatory assist unit prevents deep vein thrombosis or blood clots in the legs while the patient is under surgery or an inpatient in the hospital. (U.S. Air Force photo by Airman 1st Class Savannah L. Waters)