U.S. Navy Petty Officer 3rd Class Corey Barker, left, and Chief Petty Officer Matthew Wehr, perform pre-dive checks during exercise Dugong 2015 near Hobart, Australia, Oct. 7, 2015. Barker and Wehr are assigned to Explosive Ordnance Disposal Mobile Unit 5. U.S. Navy photo by Petty Officer 2nd Class Daniel Rolston