thank you very much for having me. and to borrow from yogi, this is deja vu all over again. this reminds me of the 70s and 80s, when i served with nato forces along the inner german border. we would map the anticipated soviet army warsaw pact army s approach and the battlefield map is ukrainians have got to kill targets faster than they present. and if you get behind, and getting behind can be just sheer numbers of presentation or the russian predicted use of heavy artillery, right in front of their own forces. so we can anticipate a crude combined arms operation going from east to west, and ukrainians simply have to have systems that will kill faster than the russians can present.