You need to be next to a pretty damn big explosion for concussion shockwaves to have effects quite that severe IRL. Larger artillery shells, FAE’s or a decent little stack of dynamite or the like - or you need to be extremely close to a smaller blast.
That being said, our survivors play with mini-nukes and pretty much all of us have dropped a stick of dynamite at our own feet the first time we’ve lit one, so those are entirely feasible scenarios. 
