December 12, 2007: Military aircraft are keeping up with camouflage developments seen in combat uniforms. Some aircraft are now using the same "digital" patterns found on the infantry, and their vehicles. Air forces use camouflage patterns for two reasons. First, is to make it more difficult for enemy aircraft above, or enemy troops below, from quickly locating the aircraft. For that reason, aircraft have two different camouflage patterns. On top of the aircraft, is a pattern that makes the aircraft blend in with the ground below (when viewed by an enemy pilot above). On the bottom of the aircraft is no pattern at all, but rather a bland monochrome that makes the aircraft harder to pick out from below. The U.S. Air Force has four "looking down" patterns, for different types of terrain. There's even one for the arctic (while, gray and black)[PHOTO]. The second use of the patterns is to make it easier to pick out your own sides aircraft. The camouflage doesn't make you invisible, just harder to spot in a hurry.