This is an interesting shot from a compositional standpoint, but it has some technical issues that bring it down. This looks like it was shot at the brightest time of day. You can tell this from the harsh shadows and blown out highlights. The colors are really funky. I don't know if you intended this or not. If you did intend it, I must confess that this is a treatment that I do not personally care for. Your sky does not look right (green tinge) and the ground is way overexposed. It also looks like the saturation was boosted a little too much. I think that it is just a touch oversharpened, but that may simply be a side effect of the high contrast. The last thing that bothers me about the shot is caused by the small size that we are allowed to post here in the challenges. I really wanna read the writing on the plack but can not because of the low resolution. Not your fault, but something to think about when picking shots for challenges. Small details sometimes become distractions because you can not see them as details...
Sorry, but I don't see any action. It also seems like this was taken in bright sunlight, and you might have gotten more detail on a cloudy day or at a different time.
very disturbing effect.. the ground is glowing.. and the sky is green.. ? on another planet maybe :) it would have been great with natural colors and a shot when the gun fired. but good consept. :)