Two other police officers later took their own lives. Roughly 7,000 National Guard troops have remained at the Capitol as security officials have continued concerns about potential civil unrest when the Senate impeachment trial of President Trump starts in February. The U.S. Capitol has been under tightened security measures since the Jan. 6 attack on the building by rioters that resulted in at least five deaths, including one police officer. CAPITOL POLICE OFFICER BRIAN SICKNICK WILL LIE IN HONOR IN ROTUNDA: PELOSI, SCHUMERSecurity officials called in 25,000 National Guard troops to be stationed at the Capitol during President Bidens inauguration, and thousands of troops have remained behind in the weeks following. Fox News' Mike Emanuel contributed to this report.
swimming mice have continue to visit the congressmen.
( z0 continue :ARG1 ( z1 visit :ARG0 ( z2 mouse :ARG0-of ( z3 swim ) ) :ARG1 ( z4 person :ARG0-of ( z5 have-org-role :ARG2 ( z6 congressman ) ) ) ) )
(z0 / continue-01
    :ARG1 (z1 / visit-01
              :ARG0 (z2 / mouse
                        :ARG0-of (z3 / swim-01))
              :ARG1 (z4 / person
                        :ARG0-of (z5 / have-org-role-91
                                     :ARG2 (z6 / congressman)))))
swimming mice have continue to visit the congressmen .
z2 :ARG0-of z3
z0 :ARG1 z1
z1 :ARG0 z2
z1 :ARG1 z4
z4 :ARG0-of z5
z5 :ARG2 z6