>military explosives and demolition training
>instructor is teaching one group at a time how to use plastic explosives
>rest of platoon is sitting in what's basically a big gravel pit
>comrade spots something poking out of the ground and proceeds to dig it up
>it's a 60mm mortar shell
>tell comrade he probably shouldn't touch that
>"don't worry it's a dud shell, they'd never allow us to sit here if there were live shells in the area"
>yeah that makes sense I suppose
>me and comrade take turns bottle-flipping the mortar shell (it was popular at the time)
>instructor comes back, we show him the round
>instructor looks visibly stressed out
>shortly entire platoon gets moved out of the pit to a ditch one kilometer away
>instructor rigs the shell with explosives and detonates it
>mfw me and my comrade realize we could've obliterated the entire platoon
>the whole thing was hush-hushed and never mentioned again