My school entrance.
Heavy big doors for firetrucks
next to that a smaller (main) entrance.
Bulletproof glass usually guarded by guards and police
behind that is another door (first you pass this security desk inside)
and as you can see, high wall with a fence on top.
Frequent terror-drills too (lock doors and everybody under the tables)
Last year the school was evaquated twice, and cancled for half a day due to a mysterious package near the door.