U.S. Marines assigned to Camp Foster, Okinawa, Japan,

U.S. Marines assigned to Camp Foster, Okinawa, Japan, and members of the Philippine air force gather for a safety brief before training on the use of the M203 Grenade Launcher and the Mossberg 500 Shotgun while participating in Exercise Balikatan 2011 on April 7 at Clark Field, Philippines.
Balikatan means "shoulder to shoulder" in Tagalog and is an annual Republic of the Philippines and United States bilateral military humanitarian assistance and training exercise that is taking place in the Philippines April 5-15. The training helps maintain readiness and helps sustain the long-term security assistance relationship shared between the two countries.