60 Minutes has learned details of a classified microwave weapon that may explain mysterious brain injuries suffered by US officials. We've been investigating these injuries for 9 years, and now our sources tell us this microwave weapon is portable, concealable, and uses relatively little power. Hundreds of possible attacks have been reported, including, we've learned, at CIA headquarters in Virginia and at least two incidents on the grounds of the White House.For years, the government doubted the stories of ...