CALLING ALL PLANEFAGS!!!
The USAF regs should dictate the numbering of trucks. https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=403 is pay-walled. Anybody have access?
"For the purposes of this document, applicable AF ARFF vehicle sets and requirements are found in Allowance Standard (AS) 010, Vehicle Fleet (Registered) All MAJCOM Common, and are based on National Fire Protection Association (NFPA) Standard 403, Aircraft Rescue and Fire Fighting Services at
Airports, and AF NFPA 403, Technical Implementation Guide."
http://static.e-publishing.af.mil/production/1/af_a4_7/publication/afpam32-2004/afpam32-2004.pdf
NOTABLE