On July 12, 1947, a former [[Capitol Police]] officer attempted to assassinate Sen. [[John Bricker]] of [[Ohio]].<ref>https://www.cincinnati.com/story/news/2017/06/15/disgruntled-policeman-shot-ohio-senator-capitol-1947/399794001/</ref>
Shortly before midnight on July 2, 1915, police responded to the U.S. Capitol where an explosion had just rocked the Senate wing.<ref>https://boundarystones.weta.org/2015/06/22/terrorism-hits-home-1915-us-capitol-bombing</ref>