we have a fire at the compound in mount carmel. we confirm that the entire compound is going up right now. >> it was an epic debacle in united states law enforcement history. a deadly shootout followed by a 51-day siege that ended with more than 70 people dead in a raging inferno. all caught on live television with the whole world watching. two questions rise from the ashes of this american tragedy. who shot first and who started the fires? it began innocently enough. in 1935, a small religious group moved to waco. an offshoot of the seventh day adventist church, they eventually called themselves the branch davidians. >> they had pretty stable leadership for a lot of years, and they were known in town as a