Waco
On 13 September 1993, Charles Riley, a fellow FBI sniper deployed during the Waco Siege claimed that he had heard Horiuchi shooting from Sierra 1, an F.B.I.-held house in front of the compound holding eight snipers, including Horiuchi and Christopher Curran on 19 April 1993. Riley later retracted his statement, saying that he had been misquoted, and that he had only heard snipers at Sierra 1 announce that shots had been fired by Branch Davidians.
Three of the twelve expended .308 Winchester shell casings that the Texas Rangers reported finding in the house were at Horiuchi's position. However, officials maintain that they could have been left behind from the earlier use of the house by the Bureau of Alcohol, Tobacco, Firearms and Explosives snipers on February 28, 1993, and that it would be "nearly impossible" to match them to Horiuchi's rifle, as it had probably been rebarreled since that time.
For the five months following the Waco inferno, Timothy McVeigh worked at gun shows and handed out free cards printed up with Horiuchi's name and address, "in the hope that somebody in the Patriot movement would assassinate the sharpshooter". He wrote hate mail to the sniper, suggesting that "what goes around, comes around". McVeigh considered targeting Horiuchi, or a member of his family, before settling on a bombing attack on a federal building- choosing to target the Murrah Building.
Read more about this topic: Lon Horiuchi