But the report said anyone exposed in the early hours was at risk of chronic sickness, as many firefighters have already reported.
They were put into service in early 2001 and quickly withdrawn after firefighters reported problems.
Even so, nearly every surviving firefighter reported problems sending and getting messages.
By this time, firefighters also reported that the fire was completely under control.
Numerous firefighters reported directly to the building lobbies, and were ordered by those commanding the operating post to proceed into the building.
However, arson was suspected as a cause, and firefighters reported a car speeding away from the blaze.
That command, rarely issued, ordered all firefighters and officers to report for duty.
The firefighter still reported no positives on his infrared unit.
In Colorado, firefighters reported modest progress on the two largest blazes there.
The first firefighters on the scene reported that Green and her ten-year-old daughter Kate were safely outside the house by the time they had arrived.