Private 1st Class Nicholas Singler, an M1A1 Abrams tank mechanic for 2nd Tank Battalion, 2nd Marine Division, drives a tank onto an M17 floating raft, while being guided by Cpl. Alexander Tafoya, a combat engineer for Bridge Company, 8th Engineer Support Battalion, 2nd Marine Logistics Group, during a training exercise aboard Marine Corps Base Camp Lejeune, N.C., Sept. 4, 2014. The raft can carry two 70-ton tanks across small bodies of water, while being towed and guided by two Mach 3 Bridge Erection Boats.