Keywords: US Navy 110718-N-NX238-016 Sailors assigned to Maritime Expeditionary Security Squadron (MSRON) 11 man an entry control checkpoint at a forward ope.jpg en SAN CLEMENTE ISLAND Calif July 18 2011 Sailors assigned to Maritime Expeditionary Security Squadron MSRON 11 man an entry control checkpoint at a forward operating base during ULTRA 2011 ULTRA is a two-week exercise focusing on expeditionary warfare skill qualifications and battle readiness to prepare for deployments U S Navy photo by Mass Communication Specialist 2nd Class Noel L Danseco/Released 2011-07-18 110718-N-NX238-016 Navy http //www navy mil/view_image asp id 104724 U S Navy photo by Mass Communication Specialist 2nd Class Noel L Danseco PD-USGov-Military-Navy San Clemente Island Red octagonal stop signs in the United States Traffic cones Checkpoints |