What four-engine turboprop military transport is operated by No. 84 Wing?
No. 84 Wing RAAF:  The wing comprises No. 34 Squadron, operating Boeing 737 and Bombardier Challenger 604 VIP jets; No. 37 Squadron, operating Lockheed Martin C-130J Super Hercules medium transports; and a technical training unit, No. 285 Squadron. Lockheed Martin C-130J Super Hercules: The Lockheed Martin C-130J Super Hercules is a four-engine turboprop military transport aircraft.
Lockheed Martin C-130J Super Hercules