but up first tonight, two breaking global challenges. the obama administration issues a new warning because of intelligence seized at osama bin laden's compound in pakistan. chris lawrence is live from the pentagon with more on that. chris? >> reporter: well, john, what we've been able to determine is that al qaeda thought the best way to hijack some of these oil tankers and really hurt oil and natural gas interests was to hijack one of the oil tankers and then detonate their explosives from the inside. they also recommended using scout ships to observe how these oil tankers move and even doing trial runs. it says that their ultimate goal was to plunge the u.s. into some sort of economic crisis by disrupting oil supplies for years to come. and based on all the intelligence that the navy s.e.a.l.s carried out of bin laden's compound, the homeland security department and the fbi issued this warning to police departments and oil companies across the u.s. because what they found is there's a