And this letter was signed by former career employees, headed by Mary McCord, who worked with Adam Schiff on the impeachment.
She's mentioned five times in this recent National Review article. McCord was the Assistant Attorney General Mary McCord, the head of DOJ’s National Security Division at the time. McCord tried to play dumb regarding Flynn's calls. She never even passed the info of Flynn's phone calls on to her replacement, that's how insignificant she felt they were. Now she's trying to appear to be an expert on the legal case: