laictiond has been looking for ways to do a large-scale attack they most recently fixated on blowing up commercial airplanes since 9/11 when they conducted the most devastating attack in u.s. history. in recent months al qaeda has been working on a so-called undetectable bomb that could get past airport security. but perhaps the most active terror group on the planet right now is isis. consuming huge swaths of land in iraq and syria. forming the so-called islamic state. thousands of foreign fighters flowing into those countries with a social media campaign unprecedented. recruiting people from around the world, including in the u.s. and europe. more than 1,500 french citizens affiliated with isis, one-quarter of the european total. this past july, a french-speaking member of isis appeared in this video threatening the group will bring slaught tore france. >> there have been a relatively large number of individuals from france who have traveled to syria, joined with the groups in the conflict there, and then have come back home. just as extreme or even more extreme than before they le