Texas Trump supporters say they're ready to take up arms the minute the president gives the order

Timeline
5:05 p.m.: A convoy of nine trucks carrying uniformed National Guard troops enters the White House complex.[54]
6:04 p.m.: White House communications office notifies reporters about a "6:15 news briefing in the Rose Garden".[55]
6:08 p.m.: Law enforcement and military personnel begin massing before protesters at the north side of Lafayette Park. They include members of the Uniformed Secret Service, D.C. National Guard, and Park Police.[56]
6:08 p.m.: Attorney General William Barr is seen in Lafayette Park reviewing protesters and law enforcement.[55]
6:15 p.m.: General Mark Milley, Chairman of the Joint Chiefs of Staff, appears in the park behind the police barricade.[56]
6:16 p.m.: Some security personnel kneel to put on gas masks. This is misinterpreted by some protesters as a sign of solidarity; they start cheering. A DC police channel announces that "CS gas", a type of tear gas, may soon be deployed.[56]
6:17 p.m.: Secret Service advance on protesters at the edge of the square at H Street and Madison Place at the northeast corner of the park.[8] After briefly occupying the intersection, they fall back.
6:21 p.m.: A person on a law enforcement communications channel says, "John, can you just confirm when you have all the grenadiers and shields with you."[56]
6:22 p.m.: Barr and Milley leave Lafayette Square. U.S. Park Police make the first of what officials later said were three announcements directing protesters to leave. The announcement is largely unintelligible even to protesters at the front of the crowd.[56]
6:26 p.m.: D.C. Police radio announces that police action is about to take place and that D.C. Police are to hold their positions on 16th Street.[56]
6:28 p.m.: Park Police notify Arlington County Police via radio that "level one's been activated", referring to a policing tactic to quell violent unrest by charging crowds to disperse them without making physical contact.[56] Police and National Guard military police, wearing gas masks and riot gear advance to the barricade on the North side of Lafayette Park.[57] At least one protester throws water bottles and is reprimanded by another protester. The Secret Service and Park Police begin to push protesters at the northeast corner of the park up Vermont Avenue as Park Police mounted on horses appear behind them.[56]
6:32 p.m.: Arlington Police radio says, "Moving forward to the intersection, forward to the intersection. Go, go, go," in reference to the largest group of protesters on H Street.[56] The protesters retreat, evacuating H Street between 16th Street NW and Vermont Ave in front of the advancing security forces. Police with riot shields enter the patio of St. John's Episcopal Church and physically push out a group of clergy and volunteers,[58][59][60] leaving the police in control of the front of St John's Church.[56]
6:34 p.m.: Arlington Police radio says, "We're gonna take 16th Street on this next surge."[56]
6:35 p.m.: Park police on H Street rush the protesters at the intersection of H Street and 16th Street. A chemical grenade is rolled at the feet of protesters.[56]
6:36 p.m.: Park police push protesters west on H Street past 16th Street. Video records several members of the Park Police SWAT team and the Bureau of Prisons Special Operations Response Team firing pepper balls at the fleeing crowd. The Washington Post reported that a member of the Park Police SWAT team threw a stingball grenade containing rubber pellets into the crowd.[56]
6:39 p.m.: A Park Police SWAT officer crouches down to roll a chemical grenade into the crowd.[56]
6:42 p.m.: Arlington Police radio says, "We are going all the way to I Street. Copy, I Street." A line of mounted Park Police officers moves forward to disperse the crowd.[56]
6:43 p.m.: Trump begins speaking in the White House Rose Garden.[55][8][56]
About 6:45 p.m.: Protesters are forced south along 17th Street, including by the use of at least two chemical or smoke grenades.[56] Spent canisters containing OC and CS gas were later recovered.[61]
6:50 p.m.: Trump concludes his speech, saying, "Thank you very much, and now I am going to pay my respects to a very, very special place."
7:00 p.m.: The curfew previously announced by D.C. Mayor Muriel Bowser goes into effect.[53][62]
7:01 p.m.: The president begins walking with a group of White House officials and a security detail from the White House complex to St. John's Church.[55][63][64]
7:06 p.m.: Trump arrives at St. John's Church, where he spends several minutes posing for photographs on the church grounds, first alone and then with his entourage.[55]
7:11 p.m.: Trump and his entourage leave the church grounds.[55]
7:18 p.m.: Trump and his entourage arrive back at the White House.[55]
Following the dispersal of protesters, construction begins on new eight-foot (2.4 m) black fence around Lafayette Park and along 17th Street at Pennsylvania Avenue restricting public access.[65][66]
10:00 p.m.: Helicopters disperse crowds that had reformed in violation of the curfew