Sheepdog Tip of the Day, During Combat tip 223
Provided a killer can't shoot out a glass window or door, inside a locked classroom is a pretty safe place. Parking lots can be much more vulnerable.
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.