171208-M-VM836-244 SIGONELLA, Italy (Dec. 8, 2017) U.S. Marines assigned to Special Purpose Marine Air-Ground Task Force-Crisis Response-Africa (SPMAGTF-CR-AF), practice fast roping out of an MV-22 Osprey in front of Mount Etna at Naval Air Station Sigonella, Italy. SPMAGTF-CR-AF is deployed to conduct limited crisis-response and theater-security operations in Europe and North Africa. (U.S. Marine Corps photo by Sgt. Takoune H. Norasingh/Released)