 FACT: When Lamont is trapped in the giant water tank he dives down  to bottom to breathe from bullet holes shot in wall. Air bubbles are  seen coming in from outside. This would be impossible given the  enormous water pressure that would be expected within the tank. If  anything water should be able to cause a slight suction in the  general bullet hole area. Instead Lamont is also able to stick his  finger through without much problem either. Not to mention on  exterior view of tank water is not seen pouring out in a spout at  all.