Sitting in seats, petrified with fear, are the passengers. They don't know who shot off first, the pilots or the terrorists. This is the type of situation that could occur in a plane. Carrying firearms is extremely dangerous and risky. Pilots are not capable of using weapons and controlling the plane. It could also make it easier for a terrorist to take over the plane. Pilots should not carry firearms on the plane for they are not capable of using such things and critical mistakes could lead to failures in the plane or other mishaps, leading to the doom of hundreds of people.
Shooting a person is really not that easy. A person cannot just aim a gun at someone else and fire even if they were in danger. The US government has debated over this issue and has concluded that pilots are incapable of taking such an enormous responsibility. That is why they have decided to increase security on the plane with several steps, including bringing marshals.
"These marshals are trained not only in the use of a weapon, but all the .
kind of things that would build up to that. They have a special firearms .
training, which is much more difficult, much more strenuous, than any .
other firearms, save maybe Delta Force and a few of those special units .
in the military, because obviously if that firearm is discharged, obviously .
we don't want them under the normal circumstances to hurt or kill an .
innocent person. But we certainly also don't want them shooting that.
firearm with the possibility of bringing that airliner down (News.Max.Com).".
Trained violence should be left to the professionals. If pilots are attacked they are in no position to defend themselves, for they have to manage the plane. Now they have types of bodyguards to protect the plane, so there is no need for them to carry weapons and jeopardize the people. .
Even if marshals are trained for this type of situation, letting them carry guns is slightly risky, for there is always the chance that a bullet could hit windows or machinery and cause the plane to go down.