DANIEL DLUZNESKI, is a school safety expert, who has observed, participated in, and supervised hundreds of active shooter drills in a school system of 100,000 students. He is also the author of the book, "The First Five Minutes: School Shooting Survival Guide for Administrators and Teachers".

As a retired Lieutenant with the U.S. Secret Service, after a 24-year career, Daniel served as a K9 technician, Crime Scene search technician, public affairs spokesperson, and White House special operations tour guide.

He is also a former Florida county schools Emergency Manager, Safety and Security, in charge of over 140 schools emergency plans, drills, prevention and preparation for emergencies and active shooter assailant events. 

https://www.amazon.com/First-Five-Minutes-Shooting-Administrators/dp/B0BLFW5FBK