U.S. Navy Damage Controlman Fireman Keaten Dunn attaches a fire main inlet to a fan during a toxic gas drill aboard the guided missile destroyer USS Ross (DDG 71) March 18, 2014, in the Atlantic Ocean. The Ross was traveling to Scotland to participate in Joint Warrior 14-1. Joint Warrior is a United Kingdom-led exercise designed to improve interoperability between allied navies and prepare participating crews to conduct combined operations while deployed.