Ray, I actually believe it's a 6 year cycle for the Rescues and Hazmats units, I tried to look it up but I couldn't find the information. I certainly agree about the crew cabs, they tried that one time in the members really hated it. In addition it made the trucks that much longer which cause problems. The firefighters on the Rescues want to be in the back so they can get equipment ready before they arrive on the scene.raybrag said:I believe the standard replacement cycle for rescues is 7 years. Crew cabs? I doubt it very much. Tried that with the HMEs . . . crews didn't like it. They want to ride in the back.