170429-N-TB410-0427 JUBAIL, Saudi Arabia (April 29, 2017) Sailors assigned to the Arleigh Burke-class destroyer Arleigh Burke-class guided-missile destroyer USS Mahan (DDG 72) secure mooring lines as the ship moors pierside next to the Avenger-class mine countermeasures ship USS Gladiator (MCM 11) in Jubail, Saudi Arabia, for 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)