[Carry_Okie]

Administrative offices maybe, but property maintenance is very likely not one of them.

[browardchad]

NYPA property maintenance was located in the WTC.

From a 9/20 Newsday story about two of the victims:

Barbella began working for the Port Authority 29 years ago. He was a general maintenance supervisor at the time of the attack, an authority spokesman said. He worked in a variety of sites over the years, landing at the Twin Towers about 10 years ago.

Full story: Co-workers Loved 'Their' Towers