do you see me on tv? im waving!

im not sure whats going on, but across the street from my office are about 15 state trooper cars, in addition to several arlington county cop cars. they have virtually closed a major intersection and the area is swarming with news teams, including a helicopter has been circling for about 20 minutes. the police have rifles out, and are circling the area and i can still hear more coming.