[dr_lew]

The ovals in the schematic at the bottom are prejudicial. When I delineate the lines of sight, the trapezoids formed by the upper and lower bounds of the field of view cover very similar areas. These both appear to have been taken from the Washington monument, and the Stewart rally is further away, so it is foreshortened more.

Judging by the landmarks both crowds appear to extend for about 2200 feet along the line of sight. Of course the width and density are harder to judge.

Why is the resolution always so low in these crowd shots? They're like UFO photos, or something.

[netmilsmom]

You do know that the rallies were in two different locations, right?