Let it be known that I saw something first for once... :) I saw something VERY cool yesterday while riding the train from Mean Streak to Millennium Force. When you go past Mantis and Snake River Falls, there is a land clearing thing going on. There was a crate and two bulldozers. You can see it from the far right of Mantis on the brake run, or from the top of Mean Streak and Millennium Force, although the train gives the best view.
Now, this area is pretty secluded from everything else in the park, many feet away from the nearest walkway, which is the splash zone for SRF. What could it be? Only time will tell. Maybe someone could get pictures? I didn't have a camera.