In this photo provided by U.S. Navy, the USS Ronald Reagan (CVN 76) and USS Nimitz (CVN 68) Carrier Strike Groups steam in formation, in the South China Sea, Monday, July 6, 2020. China on Monday, July 6, accused the U.S. of flexing its military muscles in the South China Sea by conducting joint exercises with two U.S. aircraft carrier groups in the strategic waterway.(Mass Communication Specialist 3rd Class Jason Tarleton/U.S. Navy via AP)