Final answer:
The FBI took over the siege at the Waco compound after the ATF and turned off the electricity. The details of what happened at the compound are still unknown today.
Step-by-step explanation:
The FBI took over the siege at the Waco compound after the ATF. During the siege, the FBI made the decision to turn off the electricity to the compound. The details of what exactly happened at the compound, including the start of the fire that resulted in the deaths of seventy-six people, are still unknown today.