Topic: Ignition Source

Two Combat Engineering Vehicles (CEVs) used at the Waco site were modified at Fort Hood with booms designed to insert gas into different levels of the compound. Despite concerns that these "jury-rigged" modifications could have served as an ignition source, officials state that the safety standards were not compromised. Video evidence of potential flames near the booms is attributed to events occurring at least 30 minutes before the main fire began.