I suggest you follow up with the TSA about this incident.. because if your bags can be broken into in a "Secure" area and items removed, then they can also be broken into and have items placed there (a clear breach of security).

and how would you propose that he prove that the missing items were
originally in the bag?

Jose
--
Math is a game. The object of the game is to figure out the rules.
for Email, make the obvious change in the address.