Two others were critically wounded.
She stressed to lawmakers that the investigation is ongoing.
Thinking about what we should have done differently is never far from my thoughts.
Kimberly CheatleTom Williams/CQ-Roll Call, Inc via Getty Images
Cheatle was appointed to the post by President Joe Biden in 2022.
We all know what happened that day can never happen again.
NBC News was first to report on her resignation, followed quickly by other news outlets.
