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Graham v. Connor adopted the objective-reasonableness standard for Fourth Amendment seizure-by-force claims: courts judge force from the perspective of a reasonable officer on the scene, without 20/20 hindsight, considering all the facts and circumstances, including the severity of the crime, whether the suspect poses an immediate threat, and whether the suspect is actively resisting or attempting to flee. Subjective intent (a) is not the test; suspect perception (c) is not the standard; outcome-based liability (d) was rejected. Although Graham concerns peace officers, its reasonableness framework informs private-security civil standards.

Penal Code §835a(a)(1) reflects the legislative findings of AB 392, declaring that 'the authority to use physical force, conferred on peace officers by this section, is a serious responsibility that shall be exercised judiciously and with the highest regard for the dignity and sanctity of every human life.' Subsequent provisions emphasize de-escalation, alternatives to force, and limit deadly force to imminent threats. Although §835a directly governs peace officers, its principles inform reasonableness expectations for private security in civil-liability analysis.

AB 392 narrowed §835a(c)(1) to require an imminent threat of death or serious bodily injury (SBI) — closely paralleling the standard the U.S. Supreme Court announced in Tennessee v. Garner (1985) 471 U.S. 1 for fleeing felons (limited to those who threaten death or SBI). Mere flight (a), property protection (c), and property-owner instructions (d) do not authorize deadly force. Private guards have no broader authority than peace officers in this regard and should treat deadly force as available only in defense of life.

Garner rejected the common-law 'any fleeing felon' rule and held the Fourth Amendment forbids deadly force against a fleeing suspect unless the officer has probable cause to believe the suspect poses a significant threat of death or serious physical injury to the officer or others. The old any-felony rule (a), bare possession of a weapon (b), and refusal to stop (c) are insufficient by themselves. Garner's principle is codified for California peace officers in PC §835a(c)(1) and informs the universal standard private security must respect.

Penal Code §835a(a)(2) embodies California's de-escalation policy: officers should use de-escalation techniques, crisis intervention tactics, and other alternatives to force, when feasible. SB 230 reinforces this with state-mandated training. The principle directly informs BSIS curricula and guard practice — verbal commands, time, distance, and tactical positioning are preferred over immediate physical force. Options (b), (c), (d) invert or distort the de-escalation framework that has become central to California use-of-force law.

Penal Code §692 states lawful resistance to a public offense may be made by '(1) The party about to be injured; (2) Other parties.' This is the statutory foundation for self-defense and defense of others in California. Subsequent sections (§693 for the party injured, §694 for other parties) provide that resistance must be proportionate — sufficient to prevent the offense, but no more. Options (b), (c), (d) wrongly restrict the universal right of resistance recognized in §692.

Penal Code §693 authorizes resistance by the party about to be injured: (1) to prevent an offense against the person or family, and (2) to prevent an illegal injury to property in lawful possession. The amount of force must be proportionate; deadly force in defense of property alone is generally not permitted (see PC §197 distinctions). California does not impose a duty to retreat before standing one's ground (CALCRIM 505), although tactical retreat is often the safer choice. Options (a), (c), (d) misstate the law.

Penal Code §694 authorizes 'other parties' to defend a person or property in the same circumstances as the party about to be injured, where the relationship listed in the statute applies (relative, family member, employer, employee, ward, master, mistress, guest). Modern California jurisprudence (CALCRIM 505) extends defense-of-others to any reasonably believed innocent third party. Force must be reasonable and proportionate. Options (a), (c), (d) wrongly restrict the right of defense of others.

Penal Code §197 lists circumstances justifying homicide; defense of mere property is not among them. People v. Ceballos (1974) 12 Cal.3d 470 held that deadly mechanical devices (and by extension, deadly force) cannot be used solely to protect property. Deadly force requires a reasonable belief of imminent threat of death or serious bodily injury to a person — the guard or another. Options (a), (b), (d) wrongly suggest deadly force may be calibrated to property value or owner authorization.

Reasonableness and proportionality govern force decisions. Modern continuum training teaches: presence, verbal commands, empty-hand control (soft and hard), less-lethal tools (OC, baton), and finally deadly force — each step justified only by the resistance/threat actually presented. Guards must avoid 'pre-escalation' and revert to lower-force options as resistance subsides. Bystander counts, demographics, or external pressures (b, c, d) are improper bases for force decisions and create civil and criminal exposure.

SB 230 and §835a(a)(2) embed de-escalation as the preferred first approach: clear verbal commands, time, distance, and tactical positioning aim to resolve incidents without force. Even where some level of force would be lawful, beginning with verbal techniques aligns with California's policy and reduces civil and criminal exposure. Many incidents resolve through calm, clear instruction without any need for physical contact. Options (a), (b), (d) invert the order or wrongly characterize verbal contact, and contradict modern training standards.

The reasonableness analysis under §835 and Graham v. Connor terminates at the point necessary force ends. Once a person is fully restrained and not resisting, additional force is not 'necessary' and therefore unreasonable, exposing the guard to criminal charges (PC §§240, 242) and civil liability. 'Pain compliance' (b), deterrence (c), and discretionary force (d) all describe punitive uses that the law treats as battery. Maintain reasonable hold, monitor for safety, and await police.

Excessive force by a private security guard most directly implicates §240 (assault — unlawful attempt to commit violent injury) and §242 (battery — willful and unlawful use of force or violence). When the force involves a deadly weapon or is likely to produce great bodily injury, §245 (ADW/GBI) may apply, exposing the guard to felony charges. §149 (a) targets peace officers under color of authority; §187 (c) is murder; §602 (d) is trespass — none of those is the principal statute for excessive-force charging.

OC is a less-lethal force option subject to the same reasonableness/proportionality framework as any force tool. Deployment must respond to actual resistance or threat, be the minimum reasonable response, and be consistent with training and employer policy. Mere non-compliance (a), bare presence (b), or subjective discomfort (c) do not justify chemical force. Penal Code §22810 governs lawful possession; misuse can violate that statute as well as §§240, 242, and potentially §245 if substantial injury results.

A baton strike on a non-resisting, restrained subject is force unrelated to any continuing threat or resistance. It violates the reasonableness standard and constitutes battery (§242); because the baton is a weapon likely to produce great bodily injury, §245 (assault with a deadly weapon) may apply, a felony. BSIS may revoke or suspend the Baton Permit and Guard Card under BPC §7585.10 and related provisions. Options (a), (c), (d) endorse plainly unlawful conduct and would create severe criminal, civil, and regulatory exposure.

Handcuffing is a form of restraint authorized by §835's 'reasonable restraint' clause when reasonably necessary to maintain custody, prevent escape, or protect against unforeseen resistance. The decision is fact-specific: calm subjects may still require cuffing where escape risk or threat to others remains. Cuffs must be applied without excessive tightness and checked periodically. BSIS does not mandate cuffing in every arrest (a); cuffs are not categorically excessive (b); and consent (d) is not required for lawful restraint.

California's deadly-force standard (PC §835a(c)(1); People v. Humphrey reasonable belief analysis; Graham v. Connor totality test) authorizes deadly force only on a reasonable belief of imminent threat of death or serious bodily injury. Active bat strikes to heads plainly create such a threat. Waiting for a fatal blow (b) is not required and would be tactically catastrophic. 'Shoot to wound' (c) is a training myth — firearms training is shoot center mass to stop a threat. Radio authorization (d) is not a legal prerequisite for self-defense.

Tennessee v. Garner squarely holds deadly force against an unarmed, non-violent fleeing suspect is unconstitutional. PC §835a(c)(1) codifies the principle for California peace officers, and the same standard applies civilly to private security. Property value (b), owner instruction (c), and the act of fleeing (d) cannot transform an unjustified deadly use of force into a lawful one. Deadly force on these facts would expose the guard to homicide charges (§§187, 192) and crushing civil liability.

BSIS regulations and standard industry practice require contemporaneous incident reporting, preservation of evidence (video, audio, written statements), and notification of the employer and, when appropriate, law enforcement. Concealment, evidence destruction, or fabrication compounds liability — potentially supporting obstruction or evidence-destruction charges in addition to the underlying use-of-force claim. Options (a), (b), (c) are improper and could lead to criminal charges, civil liability multipliers, and BSIS revocation.

Licensees bear primary record-keeping and reporting responsibility under BSIS regulations and the BPC §7583.39 vicarious-liability framework. Serious incidents — injuries, firearm or baton deployment, significant force — must be documented and, depending on the regulatory provision, reported. Concealment (a) exposes the licensee to discipline including license suspension or revocation. Arbitrary monetary thresholds (c) and aggregated annual reporting (d) do not satisfy the contemporaneous-incident reporting framework BSIS administers.

Penal Code §835a(a)(4) recognizes that persons with disabilities, mental health conditions, or developmental disabilities may not respond to commands as expected and may need an approach that recognizes those characteristics. Welfare & Institutions Code §5150 authorizes peace officers (and certain designated professionals) to take a person into custody for a 72-hour mental-health evaluation; security guards are not §5150 designees and should call for trained response. Forced restraint (a, c) or arbitrary time pressure (b) often escalates crises and creates legal exposure.

Positional asphyxia is a recognized cause of in-custody death; AB 1196 (2020) banned certain carotid restraints and choke holds for law enforcement and informs private-security practice. Best practice once resistance ceases: roll the person to their side or seat them, avoid pressure on chest/neck, and monitor breathing continuously. Prone restraint with weight on the back (a, c) is associated with sudden in-custody death and is now widely prohibited or sharply restricted. Ignoring the risk (d) creates criminal (PC §192 manslaughter) and civil exposure.

Reasonableness under Graham v. Connor is fact-specific and considers all circumstances including the subject's physical condition, age, mental capacity, and apparent disability. The Americans with Disabilities Act (Title II, 42 U.S.C. §12132, and Title III places of public accommodation, §12182) also constrains how persons with disabilities are treated by entities receiving federal funds and is regularly applied in §1983 force litigation. Use of force may still be lawful in defense of self or others, but the calibration is more cautious. Options (a), (b), (d) misstate the analysis.

Section 835 sanctions 'such restraint as is reasonable for [the] arrest and detention.' Force is the dynamic action by which restraint is established and maintained; both must be reasonable and proportionate. The distinction matters because excessive force (battery) is possible even when restraint is otherwise authorized — gratuitous strikes during cuffing, for example. Options (a), (c), (d) collapse important distinctions and risk wrongly authorizing punitive force or wrongly excluding alternative restraints (e.g., physical hold, zip-tie restraint).

Tueller's 1983 training principle illustrated reaction-time mechanics: an edged-weapon subject at ~21 feet can close that distance in approximately 1.5 seconds — roughly the time a holstered firearm can be drawn and fired. It is a training concept, NOT a legal authorization. Force at 21 feet (or any distance) still requires the §835a/Graham v. Connor reasonable-belief-of-imminent-threat analysis. Options (b), (c), (d) wrongly elevate a training principle into a legal rule, a path that has produced unjustified force in real cases.

Reasonableness is necessarily totality-driven. Numbers, proximity, weapons, terrain, and exit options bear on threat assessment but do not relieve the guard of the duty to consider de-escalation and proportionality. Reflexive maximum force (a) is unlawful and tactically poor; categorical force prohibitions (b) ignore the right of self-defense; waiting for an attack from each subject (c) is dangerous and not a legal requirement when an imminent threat is reasonably perceived. Tactical retreat is often the best option.

Civil Code §52.1 (Bane Act) gives a civil cause of action when rights are interfered with by threat, intimidation, or coercion — frequently used against private security in excessive-force cases. 42 U.S.C. §1983 applies to actors operating under color of state law, which can occasionally reach private security with a sufficient state nexus (e.g., off-duty officers, deputized security). State common-law torts (false arrest, battery, IIED) round out the typical claims. Options (a), (c), (d) understate or misstate the civil exposure.

Death resulting from unlawful force triggers homicide analysis. Voluntary manslaughter (§192(a)) applies where there is an intentional but mitigated killing; involuntary manslaughter (§192(b)) covers death without malice from criminally negligent or unlawful acts. Where malice is shown, second-degree murder (§187) is possible. Several California in-custody deaths have produced exactly these charges against private security and law enforcement personnel. Options (a), (b), (d) dramatically understate the criminal exposure.

Penal Code §835a(c)(1) restricts deadly force to defense against an imminent threat of death or serious bodily injury. 'Imminent' was sharpened by AB 392's amendment: it means present and immediate, judged by totality of circumstances. Future, speculative, or contingent harms do not satisfy the standard. The principle aligns with foundational self-defense doctrine (CALCRIM 505): defensive force is justified by a present danger, not anticipatory or punitive concerns. Options (a), (c), (d) wrongly stretch 'imminent' beyond its statutory meaning.

California self-defense law (codified in §§692-694, articulated in CALCRIM 505) requires that the defender (1) reasonably believed in imminent danger of harm, (2) used force reasonably necessary to defend against that danger, and (3) used no more force than reasonably necessary. The force must cease when the threat ends. Maximum or like-kind responses (a, b) are not the standard; non-lethal-only (c) is wrong — deadly force is permitted to meet a deadly threat. The reasonableness is judged on what a reasonable person would have believed under the circumstances.

Time/distance/cover are core de-escalation principles emphasized in §835a(a)(2)-(a)(4) and SB 230 training. Creating distance reduces threat imminence and allows verbal techniques to work; cover protects the guard while options are considered; time often resolves crises as adrenaline subsides. Reasonableness under Graham v. Connor explicitly considers whether these alternatives were feasible. Options (b), (c), (d) misstate the tactical-legal interaction or wrongly limit applicability.

The reasonableness standard is objective. A jury (or judge) asks what a reasonable person/officer in the guard's position would have perceived — sincere subjective fear is insufficient if articulable facts do not support imminent threat. This protects citizens from force premised on bias, anxiety, or unrelated stressors. Options (a), (b), (d) treat subjective fear as dispositive, which California law (and federal §1983 jurisprudence) rejects. Documenting articulable observations is essential when force is used.

Contemporaneous, factual reports written by the guard who was there create the strongest record. The report should describe articulable facts (subject behavior, environment, perceived threats), the force used, lower-force alternatives considered/attempted, and post-force care (medical aid, monitoring). Avoid opinion and legal conclusions; let the facts establish reasonableness. Delayed (a) or proxy (c) reports invite credibility attacks; oral-only reports (d) leave no preservable record and may violate BSIS or employer requirements.

California civil and criminal jurisprudence treats failure to render or summon aid after force as a significant aggravator — potentially elevating involuntary manslaughter (§192(b)) where death follows, and supporting Bane Act and §1983 claims. Promptly summon EMS, render aid within training, monitor breathing, and document care offered. Options (a), (c), (d) shift responsibility to the injured subject or delay care, both of which create severe exposure and contradict basic duty-of-care obligations.

OC's effects (intense burning, respiratory distress, temporary blindness) are designed to be short-duration. Once the threat ceases, additional spraying becomes excessive force (battery). Recovery protocol: stop spraying, move to fresh air, allow water rinse, monitor for distress (especially in subjects with asthma, COPD, or cardiac conditions). Unconsciousness is not a goal and indicates serious medical emergency. Leaving the subject (b) or spraying bystanders (d) is unlawful and unethical.

California self-defense and use-of-force jurisprudence (CALCRIM 505, §835a, Graham v. Connor) requires both that the actor sincerely held the belief AND that a reasonable person in the same circumstances would also have held it. Articulable facts — what the subject said, did, displayed, the surrounding environment — must support the belief. Options (b), (c), (d) wrongly reduce the standard to subjective intuition, training-status badges, or documentation alone.

Modern California training (informed by §835a(a)(3) and SB 230) recognizes that subjects in acute behavioral crisis are at heightened sudden-death risk. (The older label "excited delirium" has been rejected by the American Medical Association and the American Psychiatric Association; California training language now favors "acute behavioral crisis.") Best practice: minimize prolonged struggle, summon EMS immediately, avoid prone-with-pressure restraint, monitor airway and breathing, and treat the encounter as a medical emergency. Options (a), (b), (c) misstate the framework and have produced in-custody death litigation.

Hayes v. County of San Diego (2013) 57 Cal.4th 622 expressly rejected the federal 'final frame' approach for California negligence claims and held that an officer's pre-shooting tactical decisions are part of the totality of circumstances bearing on reasonableness. Aggressive tactics that needlessly create or escalate jeopardy can weigh against the reasonableness of subsequent force. The principle informs private-security practice — guards who needlessly escalate may find force decisions scrutinized in light of pre-force conduct. Options (a), (c), (d) misstate the rule.

Civil Code §43.55 and PC §847(b) protect peace officers from civil liability for false arrest if they acted on reasonable cause and without malice. Private persons (including security guards) do not have an equivalent broad immunity — their protection hinges on actually satisfying §837's elements. This asymmetry is one reason BSIS training repeatedly emphasizes the strict in-presence and 'in fact committed' rules of §837. Options (a), (b), (d) overstate or misallocate immunity in ways that produce false-arrest liability when relied upon.

The integrated rule: a guard may use force that is (1) reasonable, (2) proportionate to the threat, (3) for a lawful purpose (self-defense PC §692, defense of others PC §694, lawful arrest PC §§835, 837), and (4) not exceeding what is necessary. Restraint authority terminates when the threat or resistance ends. Deadly force is reserved for imminent threat of death or serious bodily injury. De-escalation is the preferred first approach (§835a(a)(2)). Delivery to police follows under §847. Options (a), (c), (d) collapse the framework and substitute peace-officer or owner authority for the statutory limits BSIS-licensed guards actually operate within.