an al qaeda captive in afghanistan. the spectrum of information suggests that we needed to put something out to warn people about the potential for attacks. reporter: what might be the target? tourist attractions like the vatican, big train stations in europe are well guarded. another 9/11 would be tougher to pull off than london 05, a bus and subways hit. if they want to cook up a bomb in their kitchen or pick up a gun and shoot someone, that s far more difficult to stop than a sophisticated airline plot. officials most fear something like the jihad attack in india. 480 people killed or wounded by ten gunmen in a three-day nightmare. i m steve handelsman, nbc news, washington. meanwhile, in germany, a u.s. drone strike has reportedly killed five nationals. last night on the rachel madow show, rachel asked michael