Sheepdog Tip of the Day, Before Combat tip 216
Massacres are often perpetuated by people who expect to die. They may not be afraid to die, but they do fear failure: dying without getting a body count. Lockdown drills, armed security, etc. can deter them.
Lt. Col. Dave Grossman, Sheepdog Seminar for Churches (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.