Revolutionary War cannons debut at Savannah History Museum for America 250

A piece of Revolutionary War history that spent more than two centuries hidden underwater is now on display in Georgia's oldest city, just in time for America's 250th anniversary . Nineteen cannons discovered at the bottom of the Savannah River were unveiled Thursday as a part of a new exhibit at the Savannah History Museum. The cannons spent nearly 240 years underwater. "This is the largest discovery of 18th century artillery from a single Revolutionary War naval event," said Nora Fleming Lee,