Actually, airplanes original intent in the military was surveillance.<quoted text>
Again you are establishing a singular intent where more terms and intents apply. Can you say the same about airplanes when the first sale of an airplane was to the Army who had a military intent.
So since the military has used the airplane since its conception to kill people you have to define airplane=weapon.
Islamist use commercial airplanes as weapons .
Airplanes were designed to be weapons.
After a while, the pilots started to use their pistols to shoot at the enemy on the ground and then they started dropping bombs, by hand, out of the open cockpit.
"Airplanes are interesting toys but of no military value."
- Marshal Ferdinand Foch [Professor of Strategy, Ecole Superieure de Guerre](circa 1911)
He was Supreme Commander of Allied forces, 1918
"Aviation is good for sport, but for the Army it is useless!"
- Marshal Ferdinand Foch