U.S. Marines with 3d Reconnaissance Battalion, 3d Marine Division conduct a military freefall infiltration as a part of exercise Castaway 21.1 on Ie Shima, Okinawa, Japan, March 9, 2021. The exercise demonstrated the Marine Corps’ ability to integrate with the joint force to seize and defend key maritime terrain, provide low-signature sustainment, and execute long-range precision fires in support of naval operations from an expeditionary advanced base. - U.S. Marines with 3d Reconnaissance Battalion, 3d Marine Division conduct a military freefall infiltration as a part of exercise Castaway 21.1 on Ie Shima, Okinawa, Japan, March 9, 2021. The exercise demonstrated the Marine Corps’ ability to integrate with the joint force to seize and defend key maritime terrain, provide low-signature sustainment, and execute long-range precision fires in support of naval operations from an expeditionary advanced base.