devices before boarding and prove it's a working device, not hiding explosives. the ramped-up security measures come as new intelligence warns terrorist groups including al qaeda and the arabia peninsula are intent on developing new bombs capable of fooling airport security measures. the tsa is asking airports in the middle east, europe and africa to watch passengers turn their devices on before boarding u.s. direct flights. and if those devices don't power up, they won't be permitted onboard the aircraft. >> coming into the u.s., they on times segregate you to a different part of the airport. at that point, you'll get additional, what tsa calls gate screening done again by security personnel. this time contracted by the air carrier themselves. >> one of the biggest worries, aqap master bomb maker. u.s. officials say asiri designed the underwear bomb that got through security and