[Carry_Okie]

But Hicks said the Port Authority, which owned the building, did its own sprinkler work, and that any other work involving sprinklers would have been arranged by an individual tenant.

If you were a building owner, would you allow your tenants to modify the fire sprinklers? If not, how did they get entry into the building's mechanical areas? Building Security would have had to let them in and they would have called for authorization. Sorry, all of that sounds VERY fishy.

[honway]

If you were a building owner, would you allow your tenants to modify the fire sprinklers?

Bingo. The sprinkler system is an integrated system;therefore, it is unlikely a single tenant could bring in un-licensed plumbers from a company in business for less than 18 months that was not listed in the phone book to work on a system critical to the safety of the entire tower.