170501-N-TB410-0474 JUBAIL, Saudi Arabia (May 1, 2017) Cmdr. Harold Bowman-Trayford, executive officer of the Arleigh Burke-class guided-missile destroyer USS Mahan (DDG 72), greets Royal Saudi Naval Forces sailors as they arrive for a tour of the ship in Jubail, Saudi Arabia, during Exercise Nautical Union 17. The bilateral multi-dimensional exercise between the U.S. and Saudi Arabia promotes interoperability, cross-training and maritime security operations designed to reassure allies and partners, preserve the freedom of navigation and the free flow of commerce in the region. (U.S. Navy photo by Mass Communication Specialist 1st Class Joshua Bryce Bruns/Released)