On several occasions I've had expensive gear disappear from my carry-on during security checks and last year a TSA agent dropped my Canon 1D Mk3, smashing both

On several occasions I've had expensive gear disappear from my carry-on during security checks and last year a TSA agent dropped my Canon 1D Mk3, smashing both the lens and the camera body. No apology, but more importantly: I was never compensated. That can’t be, can it? Property damage is property damage. Shouldn’t the TSA have insurance anyway? Is he stretching the truth?