I've always wondered why they don't use lasers on submarines. You would think that a nuclear powered sub could carry a capacitor to charge up a laser just fine, even if it has to temporarily disable half of the sub's systems for a minute. Even if it couldn't fire underwater due to water and dirt particle diffraction, it could still offer AA support along ocean fronts. Plus, if the laser missed an enemy jet, maybe it could "accidentally" take out a spying communist satellite or catch the attention of some extra-terrestrials.