1.8K views · 9.3K reactions | Hold Your Breath — — — These recon Marines from I Marine Expeditionary Force (I MEF) dive into helocast training in Yuma, Arizona. Helocasting is an airborne technique used to move small units to an insertion point. Once above the water, the Marines exit the helicopter in the most expedient way. | U.S. Marine Corps | Facebook

U.S. Marines with 3d Force Reconnaissance Company, 4th Marine Division, Marine Forces Reserve, conduct swim qualification and dive training in Mobile, Alabama, Sept. 23, 2021. Dive training allows the Marines with 3d Force Reconnaissance Co. to have multiple means of amphibious insertions, allowing them to conduct multi-domain reconnaissance, limited scale raids, or deny the enemy freedom of movement in designated areas. (U.S. Marine Corps video by Cpl. Brendan Mullin) | Marine Forces Reserve