I don't know if you've ever had the opportunity to get a close up view of these babies, but let me tell you, they are HUGE!!
Looking at them from a distance really doesn't give a real perspective on the shear size that they are.
If you look really close you'll see a small red dot at the top/back of the motor. It's actually a light that blinks on and off.
When we finished working that evening it was completely dark outside and when I say dark, I mean it was pitch black! We were a little over a mile from the nearest paved road. The wild part was driving back while being surrounded by these three armed giants (500+) while they all blinked on and off again in a eerie red glow. It was quite surreal.