Philippines, U.S. begin Balikatan 2016 at Opening Ceremony The U.S. and Philippine flags are retired during the opening ceremony of Balikatan 2016 at Camp Emilio Aguinaldo, Philippines, April 4, 2016. Balikatan, which means "shoulder to shoulder," is an annual bilateral training exercise focused on improving the ability of Philippine and U.S. military forces to work together. Marine Corps photo by Sgt. Erik Estrada SHARE: Download: Full Size (1.92 MB) Credit: Sgt. Erik Estrada VIRIN: 160404-M-QQ799-153.JPG Photo Gallery