Legal Authority and Use of Force
Foundations
An armed guard's authority is delegated, not personal. Understand the difference between citizen's arrest (a private person's narrow power to detain for a felony or breach of peace committed in their presence) and police authority, which guards do not possess. Know your post orders, scope of employment, and trespass/property law as the true basis for most lawful action on private property.
Use of Force
Learn the force continuum and the objective reasonableness standard: force must be proportional to the threat, judged from the perspective of a reasonable officer/guard on the scene, considering the totality of circumstances. Deadly force is generally justified only to prevent imminent death or serious bodily harm. Know defense of self, defense of others, defense of property (property alone rarely justifies deadly force), and duty to retreat nuances (varies by jurisdiction; many impose no retreat duty in one's own home).
Traps
- Confusing detention with arrest; a guard may briefly detain for investigation but must not overreach.
- Assuming a badge or uniform grants police powers.
- Believing verbal threats alone justify deadly force.
- Ignoring post-incident duties (render aid, notify authorities, preserve scene).
Rule of Thumb
Ask: Is the threat imminent, is my response proportional, and do I have legal standing on this property? If any answer is no, de-escalate and call law enforcement.
Worked Example
A trespasser advances with a raised fist from ten feet. A guard may use defensive force proportional to the threat but may not draw a firearm absent an imminent threat of death or serious injury.