As people rushed out of other buildings on the Capitol grounds, staffers in Pressley’s office barricaded the entrance with furniture and water jugs that had piled up during the pandemic. Groh pulled out gas masks and looked for the special panic buttons in the office.
“Every panic button in my office had been torn out — the whole unit,” she said, though they could come up with no rationale as to why. She had used them before and hadn’t switched offices since then. As they were escorted to several different secure locations, Groh and Pressley and her husband tried to remain calm and vigilant — not only of rioters but of officers they did not know or trust, she said.
https://www.bostonglobe.com/2021/01/13/nation/it-was-like-looking-evil-capitol-attack-through-eyes-massachusetts-delegation/
More and more, we learn that this "spontaneous protest" had been planned for weeks and had help from the inside.