You never know who you’ll run into on the New York-to-Washington Amtrak train — or which journalist may be coming to the rescue of a fellow journalist.

Nikki Schwab of U.S. News & World Report writes that Air America Radio host Ana Marie Cox fell ill on the train due to an allergic reaction, and FNC’s Greta Van Susteren jumped in to save her.

“If she hadn’t been there, I don’t know what would have happened. It would have been a thousand times worse,” Cox said.

Writes Schwab: “A food allergy sufferer herself, Greta was ready with a backup plan: She carries an EpiPen epinephrine shot for her own emergencies.”

(illustration by Ed Wexler for U.S. News & World Report)