Just got a note from my supervisor, who is waiting with the rest of the parents outside his son's school. The lockdown continues because the threat is deemed to be on the outside, so the children are safer inside, the school officials say. SWAT, FBI, ATF, county and city officials are all on the scene.
In a way, that seems scarier because the person who made the threat could pass himself off a concerned parent/grandparent. Again, I've seen too many movies.