NEW YORK (AP)--The commisioner of the National Football League, Roger Goodell, has announced that the tapes that have been forwarded to the league by Matt Walsh, the former patriots video assistant, are "made of glass," a characterisation that has left many longtime league observers scratching their heads. "It's just a weird thing to say," said one highly- placed source. "Irrelevant, o.k., insubstantial, that's also a word that has meaning. But 'made of glass?' What does that even mean? I think it means the Patriots will be exonerfied very soon, but I don't know."