U.S. marines and Philippine troops participate in a joint live fire military exercise as part of the 2016 Amphibious Landing Exercise (PHIBLEX) in Tarlac Province, the Philippines, Oct. 10, 2016. At least 1,400 U.S. marines based in Okinawa, Japan, and 500 Philippine troops participated in this year's PHIBLEX which was held from Oct. 4 to Oct. 12. (Xinhua/Rouelle Umali)