Yes, we lost four, and how many has America lost to friendly fire? Sh$# happens, mistakes are made. Similar to aircraft accidents, I hope that both governments pick apart what when wrong, and fix it. Communication between all levels of forces seems to be a problem, heck I can log onto pprune, tell someone off, and get a reply faster than the speed of light (not that I've ever tried that myself,) but I've seen it! Communication is so simple in this new age. Why is it lacking in our military?