Four ATF agents were killed during the botched search warrant raid on the Branch Davidian compound in Waco, Texas, on Feb. 28, 1993. For the 20th anniversary, ATF agents on the ground spoke publicly about the raid, lessons learned, and changes in the agency. Three retired ATF agents joined a Feb. 7 panel discussion hosted by the National Law Enforcement Museum in its "Witness to History" lecture series. Audio is courtesy of NLEOMF. Read "Lessons Learned from the ATF Waco Raid."