Engineer investigating Surfside collapse: "it's like taking three 3,000-piece puzzles and throwing them up in the air"
An engineer who is working on the investigation into the Surfside, Florida, condo building collapse says there is still a lot of work they have to do. Allyn Kilsheimer, president and CEO of KCE Structural Engineers, joined CBSN's Tanya Rivero to discuss what they are looking at.