It’s the 251st anniversary of the Battle of Bunker Hill, the first major battle of the American Revolution, and as part of America 250, the USS Constitution paid tribute to our history with a 21-gun salute off Fort Independence, followed by another salute as she passed by U.S. Coast Guard Base Boston. Follow as we count down to America’s 250th and tune in to nbc10boston on July 4th to celebrate with sail4th250 #countdownto250 #our250 #america250 #boston #history