Thank you Yngwie Lesso, Viktor_Rasse Tony M. and to all the others that shared this with me!

The very stronk T-14 "Armata" advertised as the tank that will "outclass the West" ironically had an breakdown during the final rehearsal.

"The parade announcer later announced that the stoppage had been planned to demonstrate how military equipment could be evacuated from the battlefield, prompting laughter from the rehearsal audience."

Its understandable that machines can break down but the whole thing made me giggle, just imagine how the tank crew should be feeling!