Some civilian workers at Luke Air Force Base in the Phoenix suburb of Glendale are protesting the federal government's partial shutdown.
Some of the workers who could not do their jobs at the pilot training base protested outside one of Luke's entry gates on Wednesday.
Signs carried by the protesters included "Congress locked us out" and "Luke employees have families."
The protesters were among 412 workers at Luke who were placed on unpaid furloughs Tuesday.
Diane Talley, an administrator at the base's mental health clinic, said the shutdown is hurting the workers economically while also keeping them from helping those they serve.
Others protesters included aircraft mechanics, engineers and financial analysts.