The fire department confirms three trucks were out of service Friday. The department and the city have been talking about the brownouts for weeks due to budget constraints.
The trucks are out of service until the next shift comes on Saturday.
Chief Terry Garrison says he's not pleased with having to remove firefighters from the streets.
"When we have these units out, it will have an impact," said Garrison. "Even though we don't know to what degree yet, it will definitely have an impact on firefighter safety and customer service."
About 15 firefighters didn't work Friday due to the brownout. The stations with the trucks that are idle still have some trucks that are in service.
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