Zylon was a body armor fabric produced by the Toyobo Corporation that was first used exclusively by Second Chance Body Armor and later by many of the other major manufacturers, except U.S. Armor. U.S. Armor says it didn't use Zylon "because it didn’t always work like it was supposed to; its ballistic properties were inconsistent at best."
The production crew from CBS spent an entire day filming at U.S. Armor Corporation, in addition to conducting a one-on-one interview of the company's president Stephen Armellino by Judge Alex Ferrer. U. S. Armor Corporation was the only major body armor manufacture in the United States that refused to produce any commercial body armor using the Zylon fabric. "It would have been irresponsible," U.S. Armor says.
After the initial failures, the National Institute of Justice completely prohibited Zylon’s continued use in ballistic products and a recall of all Zylon vests was initiated.