Sheepdog Tip of the Day, Before Combat tip 230
Not everyone on a safety team serves an "intervention capable" role. Some should be "eyes and ears" being invaluable to crowd control during evacuations and such actions.
Carl Chinn, Church Security Seminar (paraphrased)
Sheepdog Tip of the Day services:
Follow SheepdogTip on Twitter Tip Memorization Songs
Other killology services:
Bullet Proof Mind for the Armed Citizen Seminar
The Killology web site
Additional Resources
For PTSD, Shepherd Resource Group.