Depends on the model
There are all kinds of "military jet" . You would need to name a specific one for that answer
Military jet fighters patrol and if necessary attack the nations enemies. -They are a projection of power.
Entirely dependent on the "jet". The latest military jets can cost in excess of a billion dollars but a small private jet (new) wouldn't cost much more than several tens of millions of pounds.
A jet IS an airplane. However most piston engined aircraft fly in the speed range of 150 -350 mph, while most civilian jets fly between 400 and 600 mph. Military jet fighters are much faster.
It depends on the jet or aircraft you are refering too some go into our atmosphere
starting out with about 50 thousand to 60 thousand a year and you can go to the military and learn that trade
jet and propeller
Badassery - 2011 Military Jet 1-2 was released on: USA: 29 March 2011
It's a person, trained by the military to fly military aircraft such as jet fighters, bombers, tankers, etc.
The Harrier Jump Jet
It was invented for military purposes in Nazi Germany.