Lesson 28: Don’t shoot through doors.

Firing through a closed door is rarely justified. Even if someone on the other side is yelling or pounding, you usually can’t see whether they’re armed—or whether they’re even a real threat. As long as the door remains shut, the legal argument that they pose an imminent danger is weak. Stay behind cover, call 911, and don’t use deadly force unless the threat is clearly visible and immediate.