Commercial fire alarm at retreat center Heard on: Frederick County Fire - 9A DISP 00:09 00:00 Engine 201, truck 5, to Mar-Lu Ridge Retreat Center, (number withheld) Mar Lu Ridge Road. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Engine 201, truck 5, to Mar-Lu Ridge Retreat Center, (number withheld) Mar Lu Ridge Road. 00:07 Commercial fire alarm nine, Charlie 1808. 5/20/2026 03:05 PM Fire & Arson Mountville Rd, Jefferson, MD 21755 View on map