It's not just the amazing technology or unparalleled view from the air that provides such a jaw-dropping capability from a fast jet. The real magic is provided by the Imagery Analysts that can pick-out key information that cannot be replicated by anyone who has not undergone years of training:
IA Comment: Low lying ground adjacent to river is affected by flood waters. End of Comment.
I understand they have recently been approached by the woodland bear proctologists and by a new religious survey group for the Apostolic Palace.
Anyway, the Sentinel article was pretty good.