[macdknife]

the fuse has to arm if you look at the bombs you see a small props on them and thay have to spin off to arm the fuse and woud be moveing to fast to hit and thay had a pin in them so that thay woud not arm wile the plane was flying the pin woud be pulled out wen relased and flak hiting the bomb bay are on the out side of the plane will make them exploed be couse thay woud pecre the outer caseing of the bomb with shush force that thay woud go off