outside of the gate, one of the central gates at andrews, our reporters said for the most part we've seen bne the facility. meghan mcgrath, you saw there, someone in naval uniform, law enforcement, and a dog now other folks inside the facility, inside the base i should say on the ground moving through this area. as meghan said, not seeing a sense of urgency. if there was an active threat, shots fired, you would see people running all over the property from the angle we have here. the fact we don't see that suggests there's a relatively significant degree of control they have on this facility, as you might expect with a military organization. the report from stars and stripes that there's a barricade situation. if there is an active shooter, the person on the third floor of the building. >> new information also that what may have happened that somebody on the third floor of the building saw personnel, somebody with a long gun as part of this exercise, active shooter exercise scheduled, saw somebody and called in a report saying i see somebody with a gun and that may have precipitated this lock