Those guys that did that had to be some of the bravest men that ever lived. I can't imagine what it must have been like to do that. The world is a much better place because of their service and sacrifice!
My grandfather enlisted in the mid-thirties and was a wireless radio (Morse code) operator aboard Hudsons (sub-hunting aircraft) for a good portion of the war. One story that will always stick with me was when he was stationed in near Halifax and got a call from one of his men in the middle of the night - when he went to investigate, there was a U-boat in the harbor! They had chains across the harbor preventing them from getting too close, but felt he needed to investigate anyway - he talked a fisherman into taking him out into the harbor in his dory. The whole time the U-boat had its spot light trained on them so my grandfather pretended to play out the fisherman's nets and got their assess back to shore.
I think I'll go pour myself another in honor of those that landed on Juno Beach and Operation Neptune.