president's most costly initiatives. the stimulus plan and his health care reform. her resignation takes effect early month. she'll turn to her teaching job at the university of california-berkeley. it's day 109 of the gulf oil disaster and this could well be the beginning of the end. crews have wrapped up their static kill operation and the cement that they poured into that ruptured well is now hardening. but the work is not over. crews will continue to drill two relief wells. once they reach the pipeline within the next week or two, they will pump more cement in through the bottom. the bottom kill operation will serve as an insurance policy. but even then the disaster will be far from resolved. one federal officials a warns tar balls could wash ashore for years to come. let's take a closer look at the bottom kill procedure. one of the relief wells is just 100 feet from intersecting the pipeline. it would bore not only into the pipe but through it to the other side. that would allow the cement to pour into the pipeline and then