April 10, 2018 2:26 pm Hero Carlos Arredondo Prepares to Run First Boston Marathon A hero during the Boston Marathon attack in 2013, he is now training to run in it this year. US & World Videos 1:23 Canton firefighter testifies in Karen Read murder trial 2:30 Protests continue at Tufts University 2:19 Here's how to stay up to date on the Karen Read trial 0:45 Karen Read trial Day 3: Witness testimony resumes 1:56 Campus unrest continues at Boston schools