I’m no engineer, but it looks like something went wrong here. Mistakes were made. Next time you’re moving a water tower using a medium-sized crane, consider one of these options:
1.) Get a bigger crane.
2.) Take the water out of the tank.
Neither option was considered here, and the result are those frantic whistles as the crane topples over, the tank hits the ground, and the water comes exploding out. Check out that guy whose first reaction on seeing this catastrophe was to whip out his phone for a photo, though. And what’s the deal with the cameraman? Why was he filming this from the start? What did he expect to happen?