In March 2014, the Committee on Homeland Security completed its investigation of the Boston Marathon bombing, which occurred on 15 April 2013, and released a report detailing four areas needing improvement and it’s recommendations. In this follow-up report, the Committee explores some of those changes, and details areas where further improvements can and should be made.
http://homeland.house.gov/sites/homeland.house.gov/files/documents/041415-Boston-Marathon-Bombing-Report.pdf