A US FA-18 hornet fighter jet flies past fighter jets and a E-2C Hawkeyes during a routine training aboard US aircraft carrier Theodore Roosevelt in the South China sea on April 10, 2018. The carrier group Theodore Roosevelt is transiting through the South China sea on its way to the Philippines from Singapore after participating in Operations Inherent Resolve (OIR) and Operation Freedom's Sentinel (OFS) in Syria, Iraq and Afghanistan. / AFP PHOTO / TED ALJIBE