You limit casualties by factoring in worst case scenarios and closing the risk window. Their risk assessment should have said we will factor in the worst case scenario and plan and execute in that manner expecting the worst to avoid as much risk as possible and limit the bad consequences. Why do you think so many are angry? To not understand this as a horribly failed evac operation due to the leadership of our military is a joke. Who in hell in a military operation with LIVES at stake assume the Taliban will protect us, the Taliban can be trusted, and our own General telling us yesterday the Taliban was "pragmatic and helpful to the US"? That is who planned this shit show, we have woke Generals that trust the enemy and planned accordingly. We planned for a marsh mellow cookout with the Taliban, all that cooked was 13 military personnel, 200 other innocents, and who knows how many left in Afghanistan that should not have been left behind and who knows how many revenge killings.