The Viceport Military Warehouse or Viceport Military Garage is a military warehouse in Viceport, Vice City. The warehouse is identically present in both Grand Theft Auto: Vice City and Grand Theft Auto: Vice City Stories.
It only plays a minor role in Grand Theft Auto: Vice City, during the mission Sir, Yes Sir!. If the player hesitates too long stealing the Rhino Tank, it will eventually arrive at this warehouse and park inside, failing the mission.
Most players will not notice the warehouse, since the game gives enough time to steal the tank. If the player manages to enter the warehouse, it becomes clear that it wasn't meant to be accessed. It appears unfinished and not fully solid.