Navy Chief Petty Officer Ranilo Untivero, left, gives a safety brief to sailors aboard the amphibious dock landing ship USS Ashland during a shipboard firefighting course in Yokosuka, Japan, Oct. 16, 2017. Untivero is an aviation boatswain’s mate (fuels) and lead instructor assigned to the General Shipboard Firefighting Course in Yokosuka. The Ashland is in Yokosuka for training and to undergo readiness certifications in critical mission areas. Navy photo by Petty Officer 3rd Class Jonathan Clay