On a winter night in Loudoun County, Virginia, an underground 500‑gallon propane tank leaked as it was refilled, sending invisible gas into a suburban neighborhood. What started as a routine odor-of-gas call escalated when firefighters entered a home, found explosive concentrations in a basement, opened vents, and were present seconds later when an explosion collapsed the house. This episode of Mayday Monday reconstructs the incident, the multiagency response, patient care and recovery, and the hard lessons learned.

Guest: Chris Kerkstra, Loudoun County (VA) Fire & Rescue