Morris misquotes the crazy man who steals the tank. Morris says the crazy man said 'he was going to steal a tank and blow my ass up'. But the crazy man never said such a thing.
As Neela exists trauma 1 to find Frank laying down with a heart attack in the medical dispensary, her scrubs and gloves immediately disappear when she walks through the door.
When the tank approaches the hospital, the ambulance that is collided with is very obviously a derelict vehicle as the roof is already caved in and the entire passenger side is scraped up.