CNN CNN Newsroom April 17, 2013 18:35:00
Unprecedented 48 hours ago. that was -- we have not had a successful small scale terrorist attack since 9/11, and it did shake us. so what is important is that the investigation is going forward, we're getting these links, we only have been 48 hours, we have a picture of a guy, that he hasn't been arrested yet, should not be viewed as bad. >> critical to this investigation was their ability to secure the crime scene very quickly, to move people out in an ever expanding radius of -- >> security at boston marathon, worried about dehydration and, of course, crowd control issues and exhaustion. an...