23 : news helicopter
This photo was another accident (Camera! Pointed in the wrong direction!) but it caught one of the news helicopters that kept circling overhead.
That's not interesting in itself, but what happened when these helicopters flew over is pretty cool - everyone started shouting louder and waving their signs as high as they could. Which is, I assume, why the aerial photos all look like seas of pink (Planned Parenthood) and purple (NARAL and NOW) signs.