Guns are, obviously, a large part of Gundam Wing. This is fine, assuming you are on Earth, or a colony. Or, assuming you're using a laser or some such device. But, while in Space, people are, more than once, threatened with a gun (or have their friends threatened, depending on whether you're watching or reading). As we all know, guns work on the principal of 1) light a fire 2) explode the gun powder with your fire, so that the bullet can come shooting out and kill Relena (or so we might hope). As we also all know, you need oxygen to 1) Breath, 2) light a fire. The reason we wear space suits in space is (all together now) in space, no one can hear you scream! No, really, there's no air in space, = no oxygen = no guns. Oh dear. There goes some amount of plot device, ne? I realised this late one night, and promptly told anyone in the vicinity (none of whom cared ^-^;;;) But, hey, now you know. So, next time you're trying to force Duo to use the Zero system to blow up stuff, think first, and use a high tech laser. It's more fun.