Did you read the comments under the video? Because the person who made the comments is right on.

First two locations are bombing targets drawn on the ground. These are in nevada, close to Nellis AFB. If you take sectional aeronautical chart
for the region (e.g. go to myairplane.com), you can see these labeled as bombing ranges.
Green circles are faming installations, there are hundreds of these on google maps. So are the letters on the ground, google sightseeing.com, these
are plentiful.

All been discussed on here bofore.
[edit on 27-7-2007 by sensfan]