the worst pain I have ever felt. Uh it felt like a vice gripping my brain stem was there and it >> he's one of many US government officials who tell us they were hit out of nowhere by an overpowering force that inflicts lifelong disabilities. I immediately felt fullness in my head and just a piercing headache. >> Tonight, the decadel long mystery may be solved. 60 Minutes has details of a classified intelligence mission that discovered a new kind of weapon built by a foreign adversary. >> I mean, if we ackn ...