tells you they're treating this as an attempted act of terrorism, jake. >> and jim, earlier today, new york city mayor bill de blasio told me that they're operating under the assumption that there are more bombs out there, that they have not yet found. new york governor andrew cuomo just announced he's deploying a hundred additional national guard soldiers and directing state law enforcement to double security at vital assets across new york. obviously, there's concern that this isn't over yet. >> reporter: there is concern, and keep in mind the progress of events. it started on monday with this bomb sent to george soros. this morning, my colleague and i were on the air here at cnn headquarters discussing packages sent to the former president obama, former president bill clinton, and former secretary of state hillary clinton when we learned of a new device sent to this location so the possibility still remains of other locations around the country, other individuals targeted, so it's not just an abundance of caution