Just remember that the US was warned several times by Russia about the Boston bombers, but they were too busy to follow up...
In other words, they are 75% political group and 25% religion.
At 38 Seconds in the short video on you tube,
I would assume that FBI and local law enforcement are looking at Somalia communities to make sure there is no follow up attempt here in the US.
This is the first two minutes of the video below.
2:02 Minutes
WCIV 09 22 2013 10 06 11
http://www.youtube.com/watch?v=I40tZFJNT_g
Video 8 minutes
Peter King interviewed and then the panel discussion.
‘This Week’ Panel: The Terror Threat
http://abcnews.go.com/ThisWeek/video/week-panel-terror-threat-20334247