initially upon arrivaling at the airport driveway and then prior to check in and upon check in itself. as at any airport in the world, there are a number of ways to get a bomb aboard and whether it s through a person entering through regular check-in process. reporter: if a bomb did bring down this plane. the isis affiliate claimed responsibility, but analysts say that group likely doesn t have the capability to get a bomb on to a passenger plane. they say two terrorist organizations full it off. tied to al qaeda s branch in syria. developing bomb making capability and would be motivated to stroike at a russin commercial plane because the russians are bomb thel in syria. and al qaeda in yemen. al asari who is constantly
explosion. starkly contrasting a report from a russian state news agency saying none of the recovered bodies of passengers show evidence of explosive impact. tonight, cnn has learned, despite that report, u.s. government experts still aren t ruling out the possibility of a bomb on board. even as they weigh other scenarios. what could cause a catastrophic event. many things. history of fatigue cracks discovered after maintenance repairs have been done, planes where the skin has disintegrated flying over oceanic routes than catastrophic failure, issues about cargo hold, issues on engines. reporter: experts say the security at sharm el sheikh airport has to be investigated. how rigorous is security. the airport has multiple layers of security, initially upon arriving at the airport driveway, and then prior to check-in and upon check-in in t. self-. as any airport in the world, there are a number of ways to get a bomb aboard and whether