I thought that part of town was a no fly zone. Do you have a link to that?
It’s not a no-fly zone, it’s a fly only with express permission zone. NPS regularly has choppers over the Jan 22 “March for Life”, but they don’t issue crowd estimates.
Someone posted this link yesterday. They did it for Obama:
Park service changes course, plans to offer crowd estimate
http://www.usatoday.com/news/washington/2009-01-19-crowd_N.htm