they fly
the risks and benefits of airplanes are that you can travel practically anywhere and that you might die doing it
To be an airplane with jet engines? All jet airplanes leave contrails.
Yes.
Air
Gravity.
five jet
fluorecent orange
No. Airplanes are faster.
No
the stratosphere
Military airplanes with big, powerful jet engines and lots of things that go boom!
WW1 (1914-1918) was mankind's FIRST aerial war; airplanes fought airplanes (dog-fights). Korean War (1950-1953) was man's FIRST "Jet" air war; jet airplanes fought jet airplanes (dog-fights). WW1 & Korean War were the only wars of the 20th century ended by an Armistice.