Members of the United States Capitol Police honor guard stand with a wreath during the annual United States Capitol Police memorial service on May 8 honoring the four USCP officers who have died in the line of duty. This year is the 20th anniversary of the deaths of Officer Jacob Chestnut and Detective John Gibson while protecting the U.S. Capitol from a gunman'’s attack on July 24, 1998. (Bill Clark/CQ Roll Call file photo)
It has been 20 years since a man with a gun walked into the U.S. Capitol and went on a shooting rampage that killed two Capitol Police personnel and set off two decades of hardening security around Capitol Hill.
Security protocols have ramped up everywhere from airports to museums, and much of the change is attributed to the terror attacks on Sept. 11, 2001. But on Capitol Hill, the deaths of Detective John M. Gibson and Officer Jacob J. Chestnut on July 24, 1998, prompted big changes even before the attacks on New York and the Pentagon.