TOPSHOTS U.S. Marines fix their tents as they arrive at Crow Valley, Tarlac province in northern Philippines on October 9, 2012, to take part in the annual 10 day Philippine-US Amphibious Landing Exercises program which includes combined live fire exercises, aircraft displays, a helicopter raid as well as medical missions around Subic and in the western island of Palawan. The Philippines said on October 8 a former US naval base facing the South China Sea could play a key role as a hub for US ships as Washington moves to boost its presence in the Asia Pacific. AFP PHOTO / JAY DIRECTO