Here is a skin mod that will replace either the Army textures or the Swat textures in game, although you will have to rename the files for the lattter. This mod will replace the textures to make either of the above look more like the US Army, the downside to this mod is the way that the game upsizes small textures meaning that the legs look blury. However this is still an interesting mod for anyone to download and highly recommended for those that want to see more skins showing the US Army.