4 decades before serving in the Capitol as Senate majority leader, he served on the U.S. Capitol police force
[DOC] [TLE] Timeline of 1954 Shooting Events | US House of Representatives ... [PAR] Feb 26, 2014 ... Four Puerto Rican nationalists opened fire onto the House Floor ... overpowered 
by visitors, Capitol and Metropolitan police officers, ... as well as Senate Majority 
Leader William Knowland of California to ...