kinds of things, engines have shut down and safety concerns are real about the situation and david lee millerhe newsroom in new york city and where planes are not leaving airports for europe, right, david. >> indeed you are right, martha, let's say viewers who are watching us this morning, in an airport lounge, planning to travel to europe, better get comfortable, and there is a good chance they'll be in those airports, for at least a few more hours, possibly a few more days and the situation now is that the cloud has caused a ripple effect around the world. the number of transatlantic flights to europe, today, out of the normal 300 that land in europe, today, only 120 made it. at least 17,000 flights within europe, to europe, have been cancelled to date and have a laundry list i'll take you through, some of the countries affected. no particular order, britain, ireland, france, denmark, norway, sweden, finland, belgium, poland and germany and underscoring how serious the problem is, the romstein u.s. air force base in germany at this hour, has been shut down because of the volcanic cloud. mar