. >> deputy fire marshal michael mulligan was assigned to investigate the fire. the physical fire damage to the hotel room was minimal. it was so well insulated that the fire didn't have enough oxygen to spread. one cigar was missing from a new pack near the bed. it appeared that the fire started on the bedroom floor where steve was lounging at the time of the fire. >> we eliminated possible electric source of ignition. the heating and air-conditioning units were eliminated. lightning. and there was nothing else at the point of origin. >> with the most common causes of the fire eliminated, it looked as if a lit cigar might have been the cause, but investigators could find no evidence of the cigar butt or ashes. dr. david fowler, the deputy chief medical examiner for the state of maryland, immediately performed the autopsy. blood tests revealed that steve had a normal concentration of carbon monoxide in his system, extremely unusual for someone who died while breathing the carbon monoxide produced by the fire. the next step was to examine his airway passages for s

national counterterrorism center john mulligan homeland security under francis taylor and fbi counterterrorism division assistant director michaelinback will all testify this morning. this is taking place in the house homeland security. live coverage here on c-span 3, should get under way in just a moment. >>> live pictures of the house homeland security committee meeting is meeting this morning. they're holding a hear on the isis-related shooting in garland, texas. and focussing on terrorism threats to the u.s. should get under way in just a moment here live on c-span 3. other items coming up for you live road to the white house coverage later today here on c-span 3 as former rhode island governor lincoln chappy becames the fourth announced democratic presidential person. he's a former republican turned independent, and now he's running for the democratic nomination. you can see that at 5:30 eastern, again right here on c-span 3. the u.s. house starts their legislative work this afternoon at noon. we have commerce, justice, and science spending. could take up spending for the departments of transportation and housing and urban