No special testing up until recently. There was a report last night that they have begun testing on their apartments and on some vehicles they were associated with owning or driving.
Here is the article on the flask incident posted earlier.
Hijacker 'Given Anthrax Flask By Iraqi Agent'
It has been nearly a month since anthrax was discovered at the American Media building (now a Superfund cleanup site).
If the FBI has only recently begun testing the hijackers apartments for anthrax, we need to ask for our money back.