Rochester Command / Support Command / Support BATTALION CHIEF Photo courtesy of ERV Photography by Eric Chevy Suburban 4×4. DEPUTY CHIEF Photo courtesy of ERV Photography by Eric GMC Yukon 4×4. RANGER Photo courtesy of ERV Photography by Eric Polaris Ranger 6×6. ATV Photo courtesy of ERV Photography by Eric 6×6. Other Units Photo courtesy of ERV Photography by Eric Photo courtesy of ERV Photography by Eric Photo courtesy of ERV Photography by Eric