Allow you to disarm your own missiles, and possibly rearm them at a later point. Theses could hide (become undetectable) and come back to life when the enemy least expects it!
Sort of in, if your missile isn't moving, the enemy cannot detect it. Unfortunately, hiding it long enough (by being between it and your enemy) for it to be come undetectable is difficult.
Allow you to disarm your own missiles, and possibly rearm them at a later point. Theses could hide (become undetectable) and come back to life when the enemy least expects it!