we can tell you in the past hour federal investigators from atf were here with dogs searching this field as well. coming up at 6:00 we'll hear more from the police on why they believe this might be gang related. reporting live in frederick, mark segraves news4. >> here's a better look at how close those two schools are in frederick. thomas johnson high school is just two miles or less than a ten-minute drive from frederick high school. >> and a brief lockdown has been lifted after a fight at another high school in frederick county. chopper 4 flew over tusk aurora high where police say a 16-year-old student attacked a teacher in a classroom. no word on motive. the teacher is in the hospital with minor injuries and the student is in juvenile custody. >>> a retired army veteran is accused of threatening to shoot up the u.s. capitol building. police tell us they found guns and ammo inside his home. news4's kristin wright live on capitol hill. kristin, this investigation started back on...