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 prepared a mission plan. Miscommunication and confusion during response preparations, demonstrated by conflicting records about who authorized deployment and at what time, contributed to the delayed deployment. DCNG began arriving at the Capitol Complex at 5:20 p.m.—nearly three hours after DOD received USCP's request for assistance and more than four hours after the barriers at the Capitol were first breached.

The Committees' Recommendations

Based on the findings of the investigation, the Committees identified a number of recommendations to address the intelligence and security failures leading up to and on January 6. Recommendations specific to the Capitol Complex include empowering the USCP Chief to request assistance from the DCNG in emergency situations and passing legislation to clarify the statutes governing requests for assistance from executive agencies and departments in nonemergency situations. To address the preparedness of the USCP, the Committees recommend improvements to training, equipment, intelligence collection, and operational planning.

The Committees further recommend intelligence agencies review and evaluate criteria for issuing and communicating intelligence assessments and the establishment of standing "concept of operation" scenarios and contingency plans to improve DOD and DCNG response to civil disturbance and terrorism incidents. These scenarios and plans should detail what level of DOD or DCNG assistance may be required, what equipment would be needed for responding personnel, and the plan for command-and-control during the response.

The Committees' Investigation

Two days after the January 6 attack, the Senate Committee on Rules and Administration and Senate Homeland Security and Governmental Affairs Committee announced a joint bipartisan oversight investigation to examine the intelligence and security failures that led to the attack. On February 23, 2021, the Committees held the first public oversight hearing on the attack. The hearing, entitled Examining the January 6 Attack on the U.S. Capitol, featured testimony from the USCP Chief, House Sergeant at Arms, and Senate Sergeant at Arms in charge on January 6. The Committees also heard testimony from the Acting Chief of MPD. One week later, on March 3, 2021, the Committees held a second oversight hearing, which included witnesses from DOD, DCNG, FBI, and DHS.

As part of their investigation, the Committees reviewed thousands of documents. The Committees also received written statements from more than 50 USCP officers about their experiences. In addition, the Committees interviewed numerous current and former officials from USCP, Senate Sergeant at Arms, House Sergeant at Arms, Architect of the Capitol, FBI, DHS, MPD, DOD, and DCNG. Most entities cooperated with the Committees' requests. There were notable exceptions, however: the Department of Justice and DHS have yet to fully comply with the Committees' requests for information, the Office of the House of Representatives Sergeant at Arms did not comply with the Committees' information requests, and a USCP Deputy Chief of Police declined to be interviewed by the Committees. The Committees will continue to pursue responses from those who have failed to fully comply. The oversight of events related to January 6, including intelligence and security failures, will continue.