require, so that people feel confident that they're the best that are possible. >> that's what people really want right now is confidence in the numbers? >> yeah. i feel that we've managed to gather information that will help to improve that level of confidence in the numbers that are being discussed presently. >> reporter: scientists here at woods hole are taking their technology to the gulf to search for underwater plumes of oil and they're hoping to provide a picture of those plumes that we haven't yet seen. wolf? >> mary snow, reporting for us, thank you. new details are emerging about the man the authorities say tried to breach a florida air base. was it an attempted terror attack. the commander of u.s. forces in iraq and afghanistan startles lawmakers here in washington on capitol hill when he faints. the details of what happened to general david petraeus, that's coming up. ♪