This was a start, but undeniably powerful when they mitigate some of the training issues.
FWIW, I had 2000 HITs, of which I IDd three as possibly containing something of interest. What I found interesting and morbid was when viewing rock faces, complete verticals, pretty much thinking that there is no way in hell I could tell an explosion mark on the rock face, but I did imagine the horror of a plane splatting against said rock face and immediately sliding / crashing down.