tscottme wrote:
I know at one time the US deployed tethered "blimps" carrying radar to
provide radar coverage along the border, and even in the Florida Keys. I've
seen the lighter-than-air vehicles while flying or driving in the area.
It's been a few years since I was near the areas. I'm not sure if they
still operate or not.
Click here for more info http://tinyurl.com/9wjup


The aerostats are still in place. You can find them on aviation
charts covering the appropriate areas.

Mike