Authorities in the U.S. and throughout Europe are on alert and Americans are being warned about travel anywhere in Europe right now – especially in Britain, France and Germany. So how vigilant are western European nations more than nine years after 9-11? How big of a problem are radical Islamic cells in places like the UK? And how much has a tolerance for Sharia law helped to fuel the growth of radical elements in Europe? We ask Amanda Bowman, CEO of Atlantic Bridge, a group founded by British Defense Minister Liam Fox.