Nightly News | May 26, 2010
BRIAN WILLIAMS, anchor: And there are some other developments to report along these lines. Documents submitted to congressional investigators show that in the hour before the original explosion, BP knew, quote, "there were three flow indicators from the well warning of possible leaks, possible trouble." And there's evidence that crucial cement work failed, as you see there. BP investigators found a "fundamental mistake" had been made during pressure testing before the blast. Meanwhile, at one of the busiest ports in the nation, Mobile Bay in Alabama , crews are being deployed there to make sure ships coming into the bay are not trafficking in that oil from the spill. As Anne Thompson reported earlier, the president, in reaction to all of this, will travel on Friday to the Gulf Coast , but before that he will hold his first formal East Room news conference in 10 months. NBC News will have live coverage beginning at 12:45 PM Eastern time tomorrow, that's 9:45 AM Pacific , right here on this NBC station.