 Now, one of the reporters on this project went to Boston to talk with a witness to one of these horrific incidents in which two men died. Cheryl, tell us about that. Yes, Ken Bruno was the witness, and he had not been back to the site since 2016. He's a carpenter who was working inside a townhouse on Boston's south end while the two men were working outside in a trench. They were installing a drain, and Bruno stepped outside for a quick smoke and was standing on the sidewalk next to the trench when it collapsed.