A Philippine Airforce Islander plane flies over a US Navy P3-C Orion surveillance aircraft at an airbase in Puerto Princesa city, west Philippines June 24, 2015. The Philippines is holding separate naval exercises with U.S. and Japanese forces this week on a Philippine island that is not far from the disputed Spratly archipelago, where China's rapid creation of seven island outposts is stoking regional tensions. REUTERS/Romeo Ranoco