Wednesday afternoon, a day that America won’t soon forget, I was on a phone call just across the river in Trout Unlimited’s Arlington, Va., headquarters.    A group of us at TU were talking about recovering Snake River salmon populations in the Pacific Northwest when my phone began blaring with a message from the mayor of Washington, D.C. In response to the attacks on the Capitol, she was ordering a city-wide curfew in three hours.   TU staff and volunteers regularly go…