For example---read the book about nerdy crook Martin Frankel. The FBI was tracking him after Frankel absconded overseas to evade prosecution.
Intel agencies knew where he was and what he was doing every minute They knew what departing gate he was at, what European hotel he was in, and who was with him.
They let him travel b/c they needed to nab him with the assets he stole (which he converted into diamonds).
He posed as an "investment genius." He was engaged in money-laundering schemes. He formed a "charity" to give himself the aura of a do-gooder. Frankel swindled $200 million---he bought insurance companies and swindled policy holders.
Martin Frankel.
Just a thought: Weren’t the chemicals in the underwear wrapped in aluminum foil? In the past each time I’ve passed through a metal screener it goes off, triggered by the underwires....Wonder if he even went through a metal detector......alot more metal than in my underwear....Or was the manual wand even used if it went off?
Was someone(s) at an airport compliant with getting him on board and in that particular seat?