Given that, if this happened, the military has every incentive to make sure we know about it, I believe we would the minute it happened. The military can't kee

Given that, if this happened, the military has every incentive to make sure we know about it, I believe we would the minute it happened. The military can't keep track of every civilian who goes missing in Afghanistan. Also, even if they did know, making a big deal out of "omg one of our informers is dead" would (a) require them to acknowledge that so-and-so was indeed an informer, (b) give ideas to terrorists (who are nothing if not attention seeking), and... this next one is the most important one... (c) severely discourage future informers from coming forward.