sheriff, joe arpaio. across the border in juarez, mexico, a dangerous turning point as drug lords target police with an explosive device. the a.m. fix blog is up and running. go our-to-our website, cnn.com/a.m. fix. first, today could be the day. bp says it just needs to do one more crucial test before the so-called static kill operation can begin. the company says a small hydraulic leak put that on hold yesterday. >> meantime today, the government is also coming out with a new estimate of just how much oil leaked from bp's well. and it is on the higher end, higher than bp ever acknowledged, 4.9 million barrels. that translates to almost 206 million gallons, by far, the largest accidental oil spill ever. david mattingly is live for us in new orleans. does any of this come as a surprise to the people there fighting the spill on the ground day in and day out, david? >> it probably doesn't, because this entire time, they have been operating on the asuches that it