How do they get the "Nation's Holiday Tree" into Washington DC? They use a Boeing Vertol 107-II, according to the text with this image sent along by xoxoxoBruce. You'd figure this is a pretty specialized operation, because they have to haul a TREE into that highly-controlled zone and then hover for a long while, and not do something really stupid like crash into the White House. I bet they wait until it's windless...
I just like the composition here, too, because once you look at it, you realize you have to seek out and find the wire.