Marine scout swimmers kneel as they provide security on a beach. Marine scout swimmers with 1st Platoon, Company A, Battalion Landing Team 1st Battalion, 4th Marine Regiment, 31st Marine Expeditionary Unit, kneel as they provide security on a beach on Dec. 20, 2011. The Marines are practicing their landing techniques in preparation for the expeditionary unit?s upcoming deployment. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 757021-U-OSG48-505.jpg Photo Gallery