Don’t Be a Victim of Carbon Monoxide 911 Hot Designs Administrator September 20, 2018 No Comments Carbon Monoxide is a Silent Killer. Don't be a victim of this silent killer - be sure to have working CO Alarms in your home. Read our NFPA tip sheet to see what safety steps you can take. Get a Copy of it here. See Channel 9 Story here with interview of Fairfax County HAZMAT Unit COSafety Protect your Family Today !