U.S. Army Sgt. Derrick Dewalt, a wrecker operator from

U.S. Army Sgt. Derrick Dewalt, a wrecker operator from the South Carolina National Guard's 1055th Transportation Company from Laurens, S.C., manipulates the controls to lower the towing attachment on the medium tactical vehicle wrecker to hook up and tow highway patrol vehicles during the Palmetto Lightning exercise in Greenville Nov. 2, 2013. Palmetto Lightning is an exercise that tests the S.C. National Guard's response to winter storms and their ability to assist local law enforcement. (U.S. Army National Guard photo by Staff Sgt. Erica Knight/Released)