Me and some of my pals had a 'look' at the Moehne dam from dambuster height on our way back from a air show in Poland last year at 160kt and 60ft. We looked at it first from 2000', we knew what we were looking for, the a/c we were flying weighed less than a tenth of a lanc, it was broad daylight and above all, no-one was shooting at us. And yet it was still incredibly hard work to get around the hill in front of the dam, and line up square to it for longer than a few seconds.
We were absolutely in awe of what these young guys did that night, and whatever the cost on both sides, it was a flying feat that will rarely be surpassed.