EXPERIMENTAL SLPASH U.S. Marines jump out of the back of a CH-46E helicopter during Combat Rubber Reconnaissance Craft operations to test their new, multi-fuel experimental boat engines in the Indian Ocean, May 4, 2009. The Marines are assigned to 1st Battalion Landing Team, 1st Marine Regiment, 13th Marine Expeditionary Unit. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 828110-B-TTY49-044.jpg Photo Gallery