Patriots' Day
Colonial reenactors commemorate the Shot heard round the world with a staging of the North Bridge fight April 18 in Concord, Mass. Each year in mid-April, thousands of people flock to historic Lexington and Concord and Minute Man National Historical Park to celebrate Patriots' Day. Patriots' Day is a special Massachusetts State holiday commemorating the opening battle of the American Revolutionary War, April 19, 1775. (U.S. Air Force photo by Linda LaBonte Britt)