If you are interested or know anyone who wants any details about this type of training, DHS(US Dept of Homeland Security) has a special page for active shooter(spree shooter) response training; www.dhs.gov/active-shooter-preparedness .
There are classes at the FLETC, www.fletc.gov & webinars(90min) on the topic(s).
Clyde
There are classes at the FLETC, www.fletc.gov & webinars(90min) on the topic(s).
Clyde