thing will happen once the well is permanently killed out there, that bp and the coast guard will pack up and go away, and yet the oil will still come ashore. i mean, one of the things they know, it takes the oil four to six weeks to get from the well head to the coast, about that time. but what they don't know is how much oil is under the sea and how long it's going to take that to come to the marshes or beaches. there's a lot to figure out. >> anne thompson, thank you so much. this afternoon some 500 guests or so are expected to begin arriving for the wedding event of the season and rumors are still swirling about who is on that list. chelsea clinton will marry marc mezvinsky at the astor court estate this is afternoon. with a good saturday morning to you on this busy day, courtney, we still don't know who's showing up for the wedding. they've done a pretty good job with keeping these details secret, right? >> reporter: they've done a