Five Years Later, Lessons Learned From The Boston Marathon Bombing

Five years after the Boston Marathon bombing, we look back at the emergency response at the finish line and the ensuing manhunt.

We talk about what first responders did well, what lessons were learned, and how the response to the Boston bombing has changed emergency response strategies across the country.

Daniel Linskey, former Superintendent-in-Chief of the Boston Police Department.  He was with the BPD at the time of the Boston Marathon bombing.  He tweets @chieflinskey.