In 1987, Ross deprogrammed two former members of the Branch Davidians in upstate New York, and in 1988 began receiving calls about the Davidian group led by David Koresh in Waco, Texas. Ross was the only deprogrammer to work with Branch Davidian members prior to the 1993 siege at Waco. The CBS television network hired Ross as an on-scene analyst for their coverage of the Waco siege and he was consulted by the FBI as well.