A Navy ship named for a 9/11 attack site has arrived in Philadelphia for its commissioning ceremony.
The USS Somerset moved up the Delaware River on Friday. It's christened for the Pennsylvania county where a hijacked airliner crashed after passengers stormed the cockpit.
The amphibious transport dock is the last of three vessels honoring 9/11 victims and first responders. It joins the USS New York and the USS Arlington.
The USS Somerset is open for public tours on a first come, first serve basis Feb. 23 until Feb. 26 and again on Mar. 1 and Mar. 2.
The tours are from 1:00 to 3:30 p.m.
The private commissioning ceremony, which officially places a ship into service, is scheduled for Mar. 1.
The $1.2 billion vessel will then head to its home port in San Diego. It's designed to launch helicopters, tilt-rotor aircraft and assault watercraft.
