Tomorrow the US celebrates their Independence day which we don't need a Bill Pullman movie to tell us is a pretty big deal for them. Generally it involves fireworks at some stage, and a lot of them.

Just in case anyone could ever forget just how dangerous these beautiful displays in the sky could be however, the government has issued a public safety video, and it's kind of the stuff of horror movies.

It sees mannequins basically getting blown to pieces with this creepy, chirpy elevator music playing in the background.

You can watch the weirdness unfold below...