Quote Originally Posted by Teltaur View Post
There's been a ton of debate on it at Bungie.net, with theories all the way from a hologram ability (mentioned in leaks), location tagging, Natal support, or the reticle moving when turning, to just a graphical glitch or bug. Even though, I'm a little surprised not a single media outlet or leak source would mention it if it wasn't a feature of some kind.
Considering blood is spraying from the Jackal thing right in front of the AR, I would be inclined to think it is just a graphical glitch, but it would be strange to use a glitch as a screenshot.