I was in New Orleans recently and went to the D-Day Museum (highly recommended) and they had a Higgins Boat on display. When no one was looking I climbed up the ramp and stood where the soldiers would have been.
Let me tell you it was small. The sides didn't seem high enough to provide cover and the space was cramped. Those guys had guts.
Along the same lines...at Hill Air Force Base...in their museum...is a B-17..(called 'Short Bier')...and it IS tiny. A F-4 Phantom is roughly the same size. Those men of that war did have guts...in spades.
redrock