U.S. Marines with 1st Reconnaissance Battalion, 1st Marine Division, conduct dive operations on Marine Corps Base Hawaii Feb. 24, 2025. 1st Reconnaissance Battalion conducted the training to enhance rapid insertion capabilities in littoral zones as preparation for integrating with 3d Marine Littoral Regiment and its subordinate battalions while forward in the Philippines for Exercise Balikatan 25 and Kamandag 9 this summer. (U.S. Marine Corps video by Cpl. Malia Sparks)