Is he an 8-year vet or a rookie for the 8th straight year? I'd assume the latter.
Like Dakota said, call the assignor. Then call your UIC and explain what happened. The UIC could have a visit with him. He's got no business making the call anyway. Even if there WAS interference and you WERE blocked out (not saying you were, just a what if), you confer with your partner and the call belongs to the PU.
Then put on your Rev. hat and pray for the guy. He obviously needs some help from above.
