Most active shooter training teaches the last eight minutes. Prevention protects the months before them. Chris Grollnek makes the honest case for prevention over response-only training, and gives you four questions to tell a prevention-first program from the rest.

How to choose an active shooter expert: the five criteria, the intake questions, and the red flags every buyer should read before hiring. A buyer's guide from the architect of the P.R.O. Model™, an "A" National Standard for active shooter prevention.