BOSTON (WHDH) -
The USS Constitution fired off a 21 gun salute to commemorate the 70th anniversary of D-Day on Friday.
The nation's oldest commissioned warship, dating back to 1797, sailed off Castle Island to Fort Independence in the Boston Harbor.
More than 400 guests were expected to be on board for the ceremony, which also commemorated the 72nd anniversary of the Battle of Midway, a turning point in the war against the Japanese in the Pacific during World War II.
After it fired off its 21 gun salute, the National Guard's 1st Battalion, 101st Field Artillery Regiment fired ceremonial cannons in return.
The Constitution also fired a 17-gun salute near the U.S. Coast Guard Base prior to returning to Charlestown.
This was the first of five scheduled demonstrations for 2014. Old Ironsides is schedules to undergo restoration work for three years starting in early 2015. The Associated Press contributed to this report.