It is promising, but, the bullets can still penetrate the door itself. So, while adding this blocking mechanism there are still dangers. This device also presents a fire hazard leaving only windows as an escape. It is important those using this understand the dangers and how to over come them. Placing the device immediately on suspicion of a mass shooter will end the danger, but, on one, student or teacher, can remain in the line of exposure a wooden door would provide.
My first thought is while the teacher places the blocking device on the door, the students should move their desks together at a distant location from the door and perhaps even turn them sideways to protect from any ricochet bullets. Some school desks have a artificial material top, but, the underside where they store books, etc. is usually metal and would act as additional barrier.
I don't think any of these devices are unsafe, I think they add concerns not existing before. The device is not the end of the worry, but, it certainly is the beginning of safety.
My first thought is while the teacher places the blocking device on the door, the students should move their desks together at a distant location from the door and perhaps even turn them sideways to protect from any ricochet bullets. Some school desks have a artificial material top, but, the underside where they store books, etc. is usually metal and would act as additional barrier.
I don't think any of these devices are unsafe, I think they add concerns not existing before. The device is not the end of the worry, but, it certainly is the beginning of safety.
