The Navy is investigating the fuel supply of aircraft carrier USS Nimitz (CVN-68) as a possible cause for two U.S. aircraft crashes in the South China Sea, President Donald Trump told reporters during a press gaggle on Monday.

All five service members aboard two U.S. Navy aircraft are safe after the helicopters went down Sunday in the South China Sea minutes apart.

The aircraft carrier USS Nimitz last month in the South China Sea. (Edward Jacome/DVIDS/AFP/Getty Images) The USS Nimitz carrier strike group is heading to the Middle East, a U.S. official said, joining the USS Carl Vinson carrier strike group, which ...