MANILA, Philippines (AP) -- Thousands of U.S. and Philippine troops, along with Australian special forces, began annual drills Monday to prepare to quickly respond to a range of potential crises, including in the disputed South China Sea.
The exercises have been opposed in recent years by China, which is involved in territorial disputes in the South China Sea with several sides, including the Philippines, and suspects the drills are part of efforts to contain Beijing. Washington and Manila say that the drills are not directed against China, and that they also focus on preparing for natural disasters and humanitarian crises.
U.S. Defense Secretary Ash Carter will fly to the Philippines to witness some of the 11-day exercises, said U.S. Marine Lt. Gen. John Toolan, who heads the roughly 5,000 American military personnel taking part in the maneuvers.
Carter's presence will "reaffirm that the relationship that we have with the Philippines is rock solid and we're side by side," Toolan, who heads U.S. Marine forces in the Pacific, said at a news conference.
He said a highly mobile rocket system that has been deployed in hot spots such as Afghanistan will be used during the Balikatan, or Shoulder to Shoulder, exercises for the first time.
Filipino military officials said a key exercise will involve U.S., Australian and Philippine forces retaking an oil rig seized by hostile units in a mock assault in an unused oil rig off the western province of Palawan, which faces the South China Sea.
The Philippines has turned to the United States, a longtime treaty ally, and others to rapidly acquire patrol ships and planes amid territorial rifts with China that have escalated in the last four years. The disputes in the South China Sea also involve Vietnam, Malaysia, Taiwan and Brunei.
"The Philippines is the least capable armed forces in the region, and the U.S., being a big brother, is a big help," said Philippine navy Vice Admiral Alexander Lopez, who heads the contingent of about 3,500 Filipino military personnel involved in the exercises.