→ RCH#### = 'Regular' transport callsigns, abbreviation of REACH
→ PAT### = Priority Air Transport
→ SAM = Special Air Movement or Special Air Mission
→ SPAR = Special Priority Air Movement
→ CNV#### = Convoy, used by Navy transports e.g. C-40 (version of Boeing737). Same role as Air Force C-40s to transport primarily personnel and/or light freight