The problem here is simple, so this post will be too- you can't see missiles through glass(Plextanium).
(That is, if you're the one shooting them, I haven't been shot at with missiles while looking through glass so I'm not sure if it's different otherwise.)
(That is, if you're the one shooting them, I haven't been shot at with missiles while looking through glass so I'm not sure if it's different otherwise.)