tigerman
Okay, in all seriousness, how could the crew get out of the tank that landed upside down in the water?
Often times, one maybe two die in a flip like this. It may look "funny", but think of having a passenger with his upper torso sticking out of your sun roof when you flip your car. That's 2-3 tons crushing that person. Now think of 60+ tons doing that.
If it lands in water, there is the possibility that the crewmen who don't get crushed drown if the water is deep enough. Depending on the position of the turret and condition of the driver, he may be able to make it out the driver's hatch. No one else would be able to reach that hatch. The gunner is going to be stuck in a very small place upside down with water pouring in around his head.
Tanks manuevering cross country in darkness using night vision goggles for the commander and a thermal viewer for the driver trying to maintain a formation, manuever safely across uncertain terrain, navigate by map, scan for enemy targets and enemy emplaced obstacles isn't easy.
Sorry to be a killjoy, but stuff like this happens, people die, careers ended, families left without a bread winner.
At a minimum, it would take a couple of tanks to try to right the overturned vehicle. They would call for a recovery vehicle, but most likely would spring to action because in the 30, 40, 60 minutes it may take to get an M88 out there, the crew could already be dead.