Where did the corroborating witness get the information from?

Where did the corroborating witness get the information from? -@JDickerson

“He remembers it from–he was in the same dorm .. and he remembers it clearly” -@JaneMayerNYer

But did he see it? -@JDickerson

“No. As I’ve said, he heard it from someone who was there.” -@JaneMayerNYer pic.twitter.com/h9dxDiPJeX

— Norah O'Donnell🇺🇸 (@NorahODonnell) September 24, 2018