[jacquesm]

No, of course they'd do the search again. But that doesn't mean there was something to be found. Though the fact that he hand carried so many devices including thumb drives suggests that there is a real possibility that he was hand carrying bits. That leaves the question if those bits were valuable, encrypted and whether or not the decryption keys were on his person or kept on either side.

The data and the keys travelling together would be a pretty bad mistake, even knowing the keys would be a bad move.