There is this from the NY Post. Suggestive that the miller was a capitol police “Lieutenant”:
“When they broke the glass in the back, the [Capitol Police] lieutenant that was there — him and I already had multiple conversations prior to this — and he didn’t have a choice at the time.
“The mob was going to come through the door, and there was a lot of [House] members and staff that were in danger at the time,” he added.
“And when he [drew] his weapon, that’s a decision that’s very hard for anyone to make and, once you draw your weapon like that, you have to defend yourself with deadly force.”
I doubt that Capitol Police lieutenants on the job wear French cuffs and fancy cuff links. I’s still going with Congressman.