Xpleet
problem is though, if someone had tech like that, they'd have total domination
So if it was war in Afghanistan/Iraq and it's the USA who's got the tech...no problem!
go to 100 miles up, in your antigravity machine, which since it's antigravity has little concern on mass it can lift compared to our crappy chemical rockets (which are actually woeful, no matter how damn great the designers/engieers are, efficiency and practical ability wise, they SUCK)
take 100 ton of steel rods with guidance systems up to space, and drop them from your orbital spy ship...see Project Thor. completely wipe out any bugger you want, no fallout, chemicals etc
kinetic weapons from orbit.
http://en.wikipedia.org/wiki/Project_Thor#Project_Thor

since that is not happening...I'm kind of doubtful it's the US government. Not impossible, but...unlikely much as I'd like to believe it.
I'm well aware of what the US, and UK, and USSR got up to that most folk don't want to hear about "their side" (in regards to really evil and stupid stuff) but....UFOs...that tech is such a huge leap forward it's beyond normal advancement, have to be true breakthrough/accident etc
it would have filtered out

now, if you want to read up on The Day After Roswell
http://en.wikipedia.org/wiki/The_Day_After_Roswell
written by an ex-Army intelligence colonel, and national security advisor
http://www.youtube.com/watch?v=BFdlwXw9tX0&feature=related
now that is interesting
but it's still...humans being idiots :p
Spiritual stuff if true, has much more meaning

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