like at the end of the movie the CIA was looking at Roger (Leo) buying fruit, they were looking at him from a sky view, directly down on him. was this a plane that just really really high or a satellite?
Unmanned drone. Early in the film, when Roger went to meet the "defector" - the educated, linguist who wanted to quit jihad and go to the U.S. after he'd been ordered on a suicide mission - out in the desert, Roger saw the sun glint off a drone overhead while he was on his cell phone, and knowing that the CIA would be listening to any cell phone in the vicinity, he openly called on "the listener" to call off the strike (which they did).
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There could also be satellite coverage at any time. The elevation of the final scene denotes a satellite, as no drone flies operationally at that height. The NSA has satellites so sophisticated, you could walk outside and turn your watch to the sky, and it could read the seconds hand as if you brought your watch to your eyes. There is no place they can't see, no conversation they can't hear. This isn't science fiction, but pure fact.
If you saw the last "Bourne" movie, you can see examples of both satellite coverage and electronic eavesdropping. Say one word on a target list, no matter how innocently, on your cell phone, and it is recorded and saved for analysis. Nothing like a mile long super computer in Australia that is so sophisticated it can even pick up conversations via battery-operated baby monitors.
Google "Echelon NSA". Nothing like using the phrase, national security, to threaten the very rights this system is supposed to protect. Like calling a bomb, the peacemaker.
So, drone or satellite, this has all been documented as early in film like "Enemy of The State". As this movie depicts, there is sometimes a murky line between "the good guys", and the things they do. That is why Decaprio resigns at the end. He knows his agency is run by politicians, as he calls out Crowe's character. "Green Zone" depicts a fabricated war.
Be informed. If you value your rights, it is the only way to protect them.
"FOR I BEING POOR HAVE ONLY MY DREAMS....TREAD SOFTLY BECAUSE YOU TREAD ON MY DREAMS"
I agree with everything you've written of course. I'd like to add that if a person - not necessarily you, any person - thinks that the government is the enemy, then we've already lost. The only way to proceed is to think of the government as a huge clumsy child that can be guided if we have the will to stick with it. It's called democracy (with vigilance), and it's really the only game in town (except possibly for anarchy, but I don't want to go there).
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It's a UAV. A little unmanned airplane or drone that's remote controlled. It flies really high, like almost in space. The US forces use those for real since the eighties. The only thing that is unrealistic in the movie is the super sharp resolution. They can't get it that sharp yet, but it won't be long for sure. They CAN however, control those things flying around in Iraq from Langley and get live feeds. It's awesome.
To the other guy: stop being so paranoid. If you don't do anything wrong, you got nothing to worry about. Why do you think anyone, let alone the federal government who has better things to do, cares about your little life? A lot of bad s**t gets prevented thanks to all this evesdropping they do.
"Geo-synchronous satellites are the way you get stable, hi-resolution photography within their calibrated range."
If you have a satellite on a geo-synchronous orbit, that means that every day at the same hour it will be at the same spot in the sky. But it's a moving satellite (with respect to the Earth position - different hour, different position). If you want to have a satellite that remains in the same spot throughout the day, you must put it in a special case of a geo-synchronous orbit: geo-stationary (Clarke orbit). But I doubt there are many surveillance satellites in such orbit: approx. 22.000 miles (36.000 km) up above the Equator doesn't help imaging things on the ground...
They used both drones & satellites. In the beginning of the movie we see two pilots in a room staring at a screen, one, a female, handling a joystick to control a UAV.
In the last scene it is a satellite. We know this because it says so on the screen: SAT KH11-12.