Not in the least. Waco was in 1993, and the FBI lied about the non-use of pyrotechnic tear-gas rounds. Not only did they lie that they didn’t use them when they did, they also lied that they found evidence of “illegal silencers” in the Davidian dwelling, which were actually the ‘ferret’ pyrotechnic tear-gas rounds that they lied about not using. The FBI has apparently been dirty for decades. Maybe since they were founded.
Note that they kept up the lie for six years, and that the article is dated 1999.
http://www.washingtonpost.com/wp-srv/national/daily/aug99/davidians26.htm
Yes, the FBI covered up a lot at WACO. I followed that case closely. It was a seminal one in showing how much we are lied to by the old media and the power elite.