There is no bottom hatch on the Abrams series tank. Any “liquids” end up in the hull. There is a pressure system to clear the bilges out through a side vent. Cleaning the turret and hull floors are hard work...
We could douche out the turret & hull & let it all run out the driver’s escape. Then the driver would sit with his feet hanging out & do Fred Flintstone for photos.
Climbed into an Abrams one time. What about drivers getting decapitated by the turret? That notch in the front looks scary. How does the driver escape?