There are even amputee crisis actors! See:
At the time of Sandy Hook, there was a government-created crisis actor provider in Colorado called Visionbox, which described itself as "a project of the Colorado Nonprofit Development Center" and "of the Colorado Safety Task Force established by Colorado State Senator Steve King."
Active Shooter Crisis Actors Target Mall Shootings via Visionbox
DENVER, CO, October 31, 2012 — A new group of actors is now available nationwide for active shooter drills and mall shooting full-scale exercises, announced Visionbox, Denver's leading professional actors studio.