I flew out of Pittsburgh today. If I let the ticket counter know I have tools and equipment in my checked luggage they will direct me to the TSA checkpoint where I can witness them inspect my baggage.
The inspector put my bag on his table and asked me if it was locked. I told him it had TSA approved locks on it.
Then he asked (wait for it!)... "Do you have the key?" He explained that the person with the keys was not present at the moment.
I replied: "How many non-TSA people have TSA keys?"
His answer: "Oh, quite a few."
I replied: "That doesn't say much for your security program."
He replied with a sheepish grin and a blush and didn't say anything more.
He called for someone to bring the keys.
You really don't think a TSA lock provides any security do you?