[tonny747]

How could you have an external lever that would disarm airbags without someone randomly pulling it when you leave your car in the shopping centre for example? I would expect military aircraft are always guarded so wouldn't have this problem.

[folli]

It could also be a wire you need to cut, or a glass you have to smash first. The problem wouldn't be much different from someone breaking your car window to get your purse while your in the shopping center.

[jrumbut]

On the off chance you get in a crash later? The car could just give an alert if it's started with the emergency lever engaged.

It probably would disable the ignition anyway.