Gunnery Sgt. Alex Carlson explains functions and specifications. U.S. Marine Corps Gunnery Sgt. Alex Carlson explains functions and specifications as a Timor-Leste Defense Force sailor tries out an M-14 rifle aboard the guided-missile destroyer USS Lassen (DDG 82) while in port in Dili, Timor-Leste, on Jan. 28, 2009. The Lassen, assigned to Destroyer Squadron 15 and forward deployed to Yokosuka, Japan, is in Dili for a port visit and is engaging in goodwill activities. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 333932-V-JVJ55-426.jpg Photo Gallery