Marines from Bridge Company, 7th Engineer Support Battalion, 1st Marine Logistics Group, conduct a bridge exercise at Lake Elsinore, Calif., March 24, 2015. Marines built an improved ribbon bridge and a medium girder bridge. This event marks the first time a continuous span bridge from shore to shore has been built since 2002. - Marines from Bridge Company, 7th Engineer Support Battalion, 1st Marine Logistics Group, conduct a bridge exercise at Lake Elsinore, Calif., March 24, 2015. Marines built an improved ribbon bridge and a medium girder bridge. This event marks the first time a continuous span bridge from shore to shore has been built since 2002.

Marines with Bridge Company, 7th Engineer Support Battalion, 1st Marine Logistics Group, drive a Combat Rubber Raiding Craft onto the back of an Improved Ribbon Bridge during a training exercise on the Colorado River in Laughlin, Nev., March 17-21, 2014. More than 60 Marines trained in moving heavy equipment, to include 7-tons and Humvees, across a flowing body of water using BEBs and an Improved Ribbon Bridge. The IRB is a multi-piece floating bridge that can function as a raft. The BEBs were used to push the raft against the current. Despite being accustomed to training in a bay with little to no current, these Marines managed to transport two 7-tons up the river at the same time. - Marines with Bridge Company, 7th Engineer Support Battalion, 1st Marine Logistics Group, drive a Combat Rubber Raiding Craft onto the back of an Improved Ribbon Bridge during a training exercise on the Colorado River in Laughlin, Nev., March 17-21, 2014. More than 60 Marines trained in moving heavy equipment, to include 7-tons and Humvees, across a flowing body of water using BEBs and an Improved Ribbon Bridge. The IRB is a multi-piece floating bridge that can function as a raft. The BEBs were used to push the raft against the current. Despite being accustomed to training in a bay with little to no current, these Marines managed to transport two 7-tons up the river at the same time.

Major Gen. Vincent Coglianese, left, 1st Marine Logistics Group Commanding General, talks with a combat engineer Marine with 7th Engineer Support Battalion, 1st MLG, during a visit to El Centro, California, Feb. 26, 2015. Marines arrived during January, providing engineering support to construct an all-weather road in El Centro, California, along the United States-Mexico border to increase U.S. border patrol mobility and support the interdiction of transnational threats. (U.S. Marine Corps photo by 1st Lt. Thomas Gray/ Released) - Major Gen. Vincent Coglianese, left, 1st Marine Logistics Group Commanding General, talks with a combat engineer Marine with 7th Engineer Support Battalion, 1st MLG, during a visit to El Centro, California, Feb. 26, 2015. Marines arrived during January, providing engineering support to construct an all-weather road in El Centro, California, along the United States-Mexico border to increase U.S. border patrol mobility and support the interdiction of transnational threats. (U.S. Marine Corps photo by 1st Lt. Thomas Gray/ Released)