A public dialogue with USMC Sergeant Thomas Brennan and Combat Photographer Finbarr O’Reilly. Discussing their book, Shooting Ghosts: A U.S. Marine, a Combat Photographer, and Their Journey Back from War. 7 p.m. Guggenheim Performance Hall, Carey Institute for Global Good, 63 Huyck Road, Rensselaerville, NY 12147.