The U.S. is sending the USS Ronald Reagan and USS Nimitz aircraft carriers to the South China Sea for military exercises as China ramps up its own drills in the area.

Dual carrier operations and exercises are being conducted in “international waters of the South China Sea to support a free and open Indo-Pacific,” the U.S. Navy said in an emailed statement that didn’t specify locations.

The exercises will not be conducted close to any of the contested islands in the region, CNN reported.

“The purpose is to show an unambiguous signal to our partners and allies that we are committed to regional security and stability,” Rear Admiral George M. Wikoff, commander of the strike group led by the USS Ronald Reagan, told Dow Jones in an interview.