Keywords: Singapore Navy SAR-21.JPEG U S Navy Operations Specialist 2nd Class Jody Heflin right teaches Singaporean Navy divers how to use a global positioning unit April 22 2006 during Exercise Tri-Crab 2006 on Naval Base Guam The annual exercise is designed to increase the interoperability skills of explosive ordnance disposal technicians from the U S Australian and Singaporean navies http //www defenselink mil/multimedia/ 2006-04-22 MARK ALLEN LEONESIO PD-USGov ImageNote 1 1869 1000 534 989 3008 2000 2 M4 with special buttstock ImageNoteEnd 1 Soldiers SAR-21 United States Navy Explosive Ordnance Disposal Males with M4 carbine Tri-Crab 2006 Naval Diving Unit Singapore |