I'm not worried about a major attack. I am more afraid of a small chemical or biological attack that causes major panic and hysteria. In the bigger cities there would be large scale looting and chaos.
I am going this weekend to add to my 72 hour kit so that my family and I can sit tight outside of town at my sisters house until things calmed down.
If only I could convince MY sister to take this seriously & prepare to come sit it out at my house.