we talked about the overwatch we have in place. we have the unmanned aircraft and o other unmanned drone systems that have very good optical and other means of looking down. so we look what the is happening around the gate. we troo toy identify patterns and we have highly trained people to take a look at. that we also have our aircraft that we fly locally. i mentioned them a few moments ago and other manned aircraft that come off the uss off the carrier that we have off the coast as well as u.s. air force aircraft that we bring up from if out of afghanistan. and we know from long experience that visible demonstration of this tends to dissuade the attacker. they know if we can see them do