The reverse lockdown announcement came over the speaker.
I checked the hallway and swept in anyone I saw. I locked my outer door. I locked my two inner doors. I shut off the lights and covered my windows with black paper.
I asked my students to turn off their electronics, move away from the windows and wait. Wait quietly.
Then, the announcement came that we should release students to a staff member who would escort them off campus. The principal came with security and escorted the students out to safety.