Benjamin Wallace-Wells in The New Yorker:
Rita Katz is tiny and dark, with volatile brown eyes, and when she is nervous or excited she can’t sit still. She speaks in torrents, ten minutes at a stretch. Everybody who works in intelligence calls her Rita, even people who don’t know her well. She sometimes telephones people she hasn’t met—important people in the government—to tell them things that she thinks they ought to know. She keeps copies of letters from officials whose investigations into terrorism she has assisted. “You and your staff . . . were invaluable additions to the investigative team,” the special agent in charge of the F.B.I.’s Salt Lake City Division wrote; the Assistant U.S. Attorney in Boise said, “You are a rare and extraordinary gem that has appeared too infrequently throughout the course of history.” The letters come in handy, she told me, when she meets with skepticism or lack of interest; they are her establishment bona fides.
Katz, who was born in Iraq and speaks fluent Arabic, spends hours each day monitoring the password-protected online chat rooms in which Islamic terrorists discuss politics and trade tips: how to disperse botulinum toxin or transfer funds, which suicide vests work best.