The U.S. began "intense" operations in Syria against the terror group ISIS early Tuesday, sending bombers, fighters, and Tomahawk missiles into ISIS-dominated territory in the northern part of the country.
On April 15, 2013, two bombs exploded near the finish line of the Boston Marathon, killing three people and injuring more than 260. On Tuesday, the city of Boston commemorated the event with a brief ceremony on Boylston Street.