 and circumstances weren't on our side. Meanwhile, the Washington Post quotes a Secret Service official who says local police who were assigned to help spot threats in the crowd were inside the building where 20-year-old Thomas Crooks had positioned himself on the roof before he opened fire. The incident is considered the most serious Secret Service security failure since the attempted assassination of President Reagan in 1981. Meanwhile, a House committee plans to subpoena the Secret Service director for testimony.