Judge Dredd 
A Tier
02 (partial/modex only, not full FAA serial)
United States Coast Guard (military/government)
G-V
SYD/YSSY
Gulfstream Aerospace Gulfstream G550 (military/C-37B variant)
A rare sight: United States Coast Guard Gulfstream G550 (C-37B) in official livery taxiing at a major international airport.