dr. flynn, thank you for being here today.ed your work and read a lot of what you have written as again i represent the port of los angeles and i'm always very concerned that as you said, the containers security initiative scans less than 1% of u.s.-bound cargo. do you believe that scanning at the point of origin is effective, 100% effective, or should we be investing more in that scanning at our domestic courts? >> this is an issue so high we should look at dealing with this across the board. relative to we spoke, this ranks right up there. i think given a consequence we laid out. i spent a good bit of time in the port of l.a. and long beach and you get the sense of scale about what's going on. but the problem would be in this dirty bomb scenario where if we spread office around how would you work in the port, as well as of course -- when you leave the terminal, we like to ideally have that when people drive in the terminal educated for just u.s. you have to do for everything and that's what does counter proliferation value t