As the war between Israel and Hamas intensifies and with a ground invasion likely coming, law enforcement in the U.S. and abroad are on high alert. ABC’s Alex Stone sat down on Sunday in San Diego with the head of Europol, the European Union’s investigative agency to talk about the current threat environment. She told Alex that she is concerned and that her teams are seeing lots of online chatter that has them worried. The biggest concern is a lone wolf scenario that could result in a terrorist attack. The U.S. and E.U. are in constant contact right now sharing intelligence and what they are seeing online.