U.S. Marine Corps Sgt. Daniel Holtz, left, and Staff Sgt. Daniel Franklin, both combatant divers with 3d Force Reconnaissance Company, 4th Marine Division, Marine Forces Reserve, prepare to conduct a buddy-breathing exercise during dive training in Mobile, Alabama, Sept. 23, 2021. The Marines with 3d Force Recon Co. routinely conduct waterborne and amphibious training, such as advanced water survival qualifications, small boat training and dive operations to maintain and improve their unit’s capabilities. (U.S. Marine Corps photo by Cpl. Brendan Mullin)