U.S. Navy divers assigned to Mobile Diving Salvage Unit 1 and Royal Australian Navy divers conduct supervisor checks before a surface-supplied dive during Exercise Dugong 2016, in Sydney, Nov. 8, 2016. Dugong is a bilateral U.S and Australian training exercise that advances tactical level U.S. service component integration, capacity and interoperability with Australian Clearance Diving Team 1. Navy photo by Petty Officer 1st Class Arthurgwain L. Marquez