Well integrity testing began at approximately 4:00 pm CDT, and by 5:00 CDT, the biggest part of the oil flow had been choked off. Engineers will slowly close off the well--choke it--in six hour increments, and measure pressure, sonar, seismic and acoustic data. But the photo below doesn't really inspire a lot of confidence in BP's engineering skills. Or, maybe it does, since the "labeling" here has all the complexity of the directions you'd find on a package of Trojans.
Gimme some feedback in the comments.