Navy Petty Officer 1st Class Michael James Soliven, a biomedical technician with 1st Dental Battalion, 1st Marine Logistics Group, refers to a manual to troubleshoot a piece of dental equipment during Exercise Desert Scimitar 2014 aboard Twentynine Palms, Calif., May 12, 2014. DS 14 is an annual exercise held by the 1st Marine Division, in which 1st MLG serves as their tactical logistics support.