>> threat level to the uk has been raised to critical. >> one to blow up planes flying to the united states, the other to blow up buildings in canada. and in 2008, a deadly attack on the u.s. embassy in yemen. and storm says he can provide the cia something no one else can. access to awlaki himself. he tells us the cia sent him on this dangerous spy mission october 2008, a month after the embassy attack. to see awlaki, now hiding in a remote part of yemen. >> he's worried about security, but he's also worried about people following me. >> the mission, give awlaki a laptop, solar panels, night vision goggles he'd requested. some secretly implanted with spy software.