The problem was that the gun turret was mounted directly above the radiator under the Defiant's belly, so the 3 foot oval door aft of the radiator was the gunner's exit, apart from turning the turret 90 degress to the direction of flight and getting out via the turret's sliding rear doors, which was the method by which the gunners got in the turret. Gunners were advaised that on landing the turret should be facing aft in case a fighter snuck up on the aircraft on finals or such like, but gunners often turned the turret to enable themselves an easy exit, since the turret had to be facing either left or right to allow the rear doors to open. The GQ Parasuit, the Rhino Suit, was the cause of death of a few gunners due to it not functioning properly after the gunner bailed out. Aside from the gunner's 'chute, it also contained a dinghy and basic survival equipment. Not the most enviable place to be in the fight.