Chris Grollnek Police Officer and Active Shooter / Lessons Learned

The History of Special Operations Psychological Selection

A note from Chris Grollnek, active shooter expert: Long before anyone used the phrase behavioral threat assessment, the Office of [...]

By |2026-09-25T19:53:29-05:00November 30, 2014|Chris Grollnek Blog|Comments Off on The History of Special Operations Psychological Selection
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