Keywords: Flickr - Official U.S. Navy Imagery - Sailors climb over a 12-foot wall during the Tough Mudder competition.jpg SNOW VALLEY Calif May 28 2011 Mass Communication Specialist 2nd Class Rufus Hucks left and Mass Communication Specialist 2nd Class Michael D Blackwell II assigned to Fleet Combat Camera Group Pacific climb over a 12-foot wall during the Tough Mudder competition Tough Mudder is a 10-mile obstacle course designed by British special forces to challenge a competitor's strength and endurance U S Navy photo by Mass Communication Specialist 1st Class Matthew D Leistikow/Released 110528-N-JC271-763 http //www flickr com/photos/usnavy/5805272088/ Sailors climb over a 12-foot wall during the Tough Mudder competition 2011-06-06 13 32 http //www flickr com/people/56594044 N06 Official Navy Page from United States of America MC1 SW Matthew D Leistikow/U S Navy Attribution License XMP-photoshop Source Navy Visual News Service PD-USGov-Military-Navy Official U S Navy Imagery http //flickr com/photos/56594044 N06/5805272088 2012-11-15 01 25 20 cc-by-2 0 Images from United States Navy to check |