According to an earlier email from FBI Supervisory Special Agent Shayne Buchwald in Maryland, McGrath was wounded during "an agent-involved shooting" about 6:30 p.m. in a commercial area on the southwestern outskirts of Knoxville, Tennessee.

Source: https://rapidcityjournal.com/news/national/former-chief-of-staff-to-maryland-governor-dead-after-3-week-manhunt-confrontation-with-fbi/article_a3e26a6e-746c-5f49-a59c-97e2b930e319.html

Boston’s Supervisory Special Agent (SSA) declined to open cases on everyone who went to D.C. because they were “going to a political rally, which is First Amendment protected activity,” according to Hill.

Source: https://www.shorenewsnetwork.com/2023/03/04/fbi-shielded-identities-of-undercover-assets-who-may-have-been-inside-capitol-on-jan-6-whistleblower-says/