Sizing Up a Crowd
Sizing Up a Crowd

How do experts come up with crowd estimates at Washington events?

Crowd estimates in DC can be less than scientific. Case in point: Michele Bachmann's count of 1.6 million people at Glenn Beck's 2010 rally on the Mall. The real figure was closer to 87,000, says Curt Westergard of Digital Design & Imaging Service in Falls Church. His company estimates crowd sizes for CBS News by flying a camera-rigged balloon above the Mall. Here's how it works.

Subscribe to Washingtonian
Posted at 02:05 PM/ET, 05/14/2012 RSS | Permalink | Washingtonian.com Guides