If you see soldiers running, you should do the same. It's a sound rule to live your life by. What you wouldn't expect is that their running is solely the result of their playing silly buggers with big cannons.
A stern wag of the finger, then, to the Russian army whose all round high jinx lead to the following viral video.
Here they are firing heavy artillery shells into the mountains of North Ossetia, chuckling at how clever they are, before running for cover when a cloud of white fluffy stuff threatens to freeze their roubles off.
Quick vodka will soon warm that up.