The UK uses a gold-silver-bronze command structure for emergency management. The gold commander is overall in control from a distant command center, silver commander is in charge on scene, and bronze commander directly controls resources on scene. An example is the 2005 Buncefield oil depot fire, where the strategic operation was run from gold command off site, silver was initially on site then moved, and bronze was on the fire ground. Emergency management involves mitigation, preparation, response, and recovery phases.