 looking at your sector, you're looking for the places where a shooter can potentially hide. And if you look at the roof, that's actually a gabled roof, you know, has a pitch in the center. And the shooter was actually on the reverse slope, at least from the video that the crowd shot. He's on the reverse slope of that roof, possibly out of sight of the counter sniper teams until he comes up over the top to make a shot. And I was trying to do like a terrain elevation analysis.