public and private sector. those hosting events those that own stadiums and doing security. it's really really important that during this holiday weekend they are on their top game and they have the best security officials and thinking through their emergency response plans. sometimes during holidays even security professionals want to take a holiday. this is not one to miss. they want to be focused and look at every threat. if you see something, say something. dhs has that exactly right. sometimes americans looking and thinking of things prevented some of the biggest attacks we have seen. >> michael, right now it's different this weekend than years past because they are not necessarily looking for the spectacular al qaeda style attack or even the igniting of a sleeper cell. now, they are worried about one guy, one lone wolf somewhere. >> look pressure cooker bombs are a big thing, from the boston