Wind Breaker remembered one story he'd heard, way back when the Order first started up and had proved themselves to have avoided an infiltration by any changelings. They had assembled in a massive square and had the Guards surrounding them before randomly killing one of their own until the Guards were satisfied while never making a sound or flinching from seeing the pony next to them killed. Only after who knows how many of the Order ponies were executed and then examined did the Guards stop. Then the Questioning Order demanded that the square be renamed the Proving Field and the surrounding area in the Crystal Dominance made into their headquarters. 