Power Repair Prime Power transmission and distribution specialists assigned to Company D, 249th Engineering Battalion, repair power lines in Rio Grande, Puerto Rico, Oct. 19, 2017. The mission supports those affected by Hurricane Maria. Air Force photo by Master Sgt. Joshua L. DeMotts SHARE: Download: Full Size (1.01 MB) Credit: Master Sgt. Joshua DeMotts VIRIN: 171018-F-FH950-0396C.JPG Photo Gallery