To get his bomb into this room, Abdullah Asieri, one of Saudi Arabia's most wanted men, avoided detection by two sets of airport security including metal detectors and palace security. He spent 30 hours in the close company of the prince's own secret service agents - all without anyone suspecting a thing.
How did he do it?
Taking a trick from the narcotics trade - which has long smuggled drugs in body cavities - Asieri had a pound of high explosives, plus a detonator inserted in his rectum.
At least the TSA already has a large supply of rubber gloves...