Definitely. Nearly all lone shootings have reports of multiple gunmen because it...

xxpor · on April 3, 2018

The Breaking News Consumer's Handbook: Active Shooter Edition

greggarious · on April 3, 2018

>Definitely. Nearly all lone shootings have reports of multiple gunmen because it is just so chaotic.

For example at Columbine one of the shooters removed their trenchcoat, which when talking to victims briefly gave the impression of a 3rd shooter.

tehlike · on April 3, 2018

It is also safer to assume multiple. You cannot be sure.