I prefer to work alone because I've found from past experience it's just easier. Still, it was hard not to cross paths with other journalists in Syria in the late summer and fall of 2012, where you were free to roam without government restrictions.

I first saw James Foley — whom the Islamic State executed last month — at a demonstration in Aleppo, a rebel stronghold. He was standing perfectly straight and steadily holding his camera as he filmed a handful of men dancing while drums were pounded and scores of people sang.

He arrived at the ad hoc police station another day seeking an interview with one of the leaders there while I was shooting photos. We shook hands and introduced ourselves then returned to our work. Apparently neither of us could afford the time to chat.