In the case of subjects presenting with agitated-chaotic behavior, it is extremely important that officers not compress distance in approaching the subject unless exigent circumstances exist. Case histories have clearly shown that distance compression with delirious and/or paranoid subjects significantly increases agitation, which in turn can exacerbate the subjects' psycho-medical condition. Getting too close too quickly also compromises the reactionary gap of officer action-reaction lag time in controlling and/or defending against violent subjects.
This scenario rarely ends well for officers and subjects.
Whenever safe and practical to do so, officers should make sure that all components and resources are marshaled and immediately available to engage and complete the capture/control, sedation, and medical intervention of the PME subject. EMS should be staged at a safe location proximate to the scene to allow for a rapid response for the immediate sedation and medical intervention of the subject.
EMS should be equipped to administer sedatives such as Versed nasally or ketamine intramuscularly as needed. It is critical that officers understand that most agitated-chaotic subjects are hyperthermic (overheated) and may be presenting with agitated-excited delirium syndrome, which is often fatal during or immediately following police uses of force. Therefore, it is important that these subjects be medically sedated as soon as possible to reduce cardiovascular stressors that lead to respiratory and cardiac failures that are major causes of sudden in-custody death.
The best engagement with an agitated-chaotic PME subject is one that avoids unnecessary uses of force. Always have a studied response, rather than an emotional reaction, to perceived or actual resistance. If the subject is not presenting with extreme agitation, delirium, or hallucinating, attempt to calmly and patiently converse with him to assuage him and calm him down. Try not to yell orders, directions, or commands. Maintain distance and continue to assess the subject's ability to comprehend and comply.
If the need for force is anticipated and must be used, make sure that your arrest and restraint team is ready. Have a plan and move quickly with commitment. Remember if you use an electronic control weapon (ECW) to minimize load cycles and cuff the subject under load. ECWs and/or body compression alone rarely cause death, but they most certainly exacerbate the factors that cause a subject to have a psycho-medical emergency and can significantly increase respiratory and cardiovascular stressors.