The USS Zumwalt, the Navy's new guided missile destroyer, passes Fort Popham at the mouth of the Kennebec River, as it heads out to sea, Monday, March 21, 2016, in Phippsburg, Maine. The new destroyer, which was built at Bath Iron Works, will undergo final builder trials before the ship is presented to the Navy for inspection. (AP Photo/Robert F. Bukaty)Dave Cleaveland and his son, Cody, photograph the USS Zumwalt as it passes Fort Popham at the mouth of the Kennebec River, Monday, March 21, 2016, in Phippsburg, Maine. A new destroyer, which was built at Bath Iron Works, will undergo final builder trials before the ship is presented to the Navy for inspection. (AP Photo/Robert F. Bukaty)The USS Zumwalt, the Navy's new guided missile destroyer, passes Fort Popham at the mouth of the Kennebec River, as it heads out to sea, Monday, March 21, 2016, in Phippsburg, Maine. The new destroyer, which was built at Bath Iron Works, will undergo final builder trials before the ship is presented to the Navy for inspection. (AP Photo/Robert F. Bukaty)The USS Zumwalt, the Navy's new guided missile destroyer heads out to sea, Monday, March 21, 2016, in Phippsburg, Maine. A new destroyer, which was built at Bath Iron Works, will undergo final builder trials before the ship is presented to the Navy for inspection. (AP Photo/Robert F. Bukaty)