I was one of the lucky folks in the DC area in that my power only flickered on Friday, never fully lost power at all! Who knew buried power lines were a good idea????
My work wasn't so lucky their power went out and didn't come back on till 21 hours later at 8PM. We were on generator through that time. Unfortunately the COM Room for our whole building is not on Gen-set so we lost phones and some of our networks as the UPS's in there are just too old. So things are STILL catching up as of 12 hours later and it looks like the queue's won't finish for another 4 to 6 hours.
Cabin John park is reported CLOSED due to down lines.
Other trails I've heard about include 17 trees down at Schaeffer and WF and Accotink are war-zones.
Day 7 straight of work is sucking. Hard.