Assault Amphibian School

U.S. Marine Corps Sgt. Kevin Storman, (center) platform instructor, Assault Amphibian School (AAS) Battalion, Training Command, calls his students into a school circle at Marine Corps Base Camp Pendleton, California, Jan. 28, 2019. The students were being evaluated on ground guidance procedures and techniques when guiding an AAV.(U.S. Marine Corps photo by Cpl. Juan Bustos)

U.S. Marine Corps Sgt. Matthew Carstensen, (center), instructor with amphibious assault vehicle instructor, Amphibian Crewman Course (AAC), Assault Amphibian School (AAS) Battalion, Training Command, observes Pfc. Watson Bryant, (left), and Pfc. Tristan Campbell, (right), students with AAS Bn., Training Command as they maneuver an amphibious assault vehicle (AAV) P7/A1 during ground guidance drills at Marine Corps Base Camp Pendleton, California, Jan. 28, 2019. The drills were conducted to evaluate the students on ground guidance procedures and techniques when guiding an AAV. (U.S. Marine Corps photo by Cpl. Juan Bustos)

U.S. Marine Corps Pfc. Sarah Brewster, left, student, Assault Amphibian School (AAS) Battalion, Training Command, instructs the operator of an amphibious assault vehicle (AAV) P7/A1 with hand-and-arm signals during ground guidance drills at Marine Corps Base Camp Pendleton, California, Jan. 28, 2019. The drills were conducted to evaluate the students on ground guidance procedures and techniques when guiding an AAV. (U.S. Marine Corps photo by Cpl. Juan Bustos)

U.S. Marine Corps Sgt. Matthew Carstensen, amphibious assault vehicle instructor, Assault Amphibian School (AAS) Battalion, Training Command, inspects an amphibious assault vehicle (AAV) P7/A1 prior to a ground guidance drill at Marine Corps Base Camp Pendleton, California, Jan. 28, 2019. The drills were conducted to evaluate the students on ground guidance procedures and techniques when guiding an AAV. (U.S. Marine Corps photo by Cpl. Juan Bustos)

U.S. Marines attending the Assault Amphibian Vehicle Repairer Intermediate Course (AAVRI) take a HS-525 transmission from a horizontal stand on to a vertical stand to begin the shimming process at the Assault Amphibian School, Del Mar Beach, Marine Corps Base Camp Pendleton, California, Oct. 10, 2018. Shimming ensures that the forward and reverse speed shaft of the HS-525 transmission has the proper clearance between gears or mechanisms that safeguards the proper meshing between machined surfaces to avoid damage and additionally allows lubricants to pass through the transmission preventing the overheating and warping of components within the transmission. (U.S. Marine Corps photo by Cpl. Juan C. Bustos)