Get use to it.. I had stuff stolen from my checked luggage (dive knife and dive kit). From SNA to DFW to Cozumel. I noticed it in Cozumel. The TSA lock indicated it was opened.

I contacted AA... they said it was a TSA problem.
I contacted TSA... they said, over the phone, that they have had a bunch of keys missing and it is not their problem.
I contacted police at DFW on my way back home.. they basically told me to get lost.
OC Sheriffs at SNA took an incident report when I got back home.