BRIDGEWATER, N.J. (AP) — The U.S. military said Sunday that another American service member was killed as part of the war with Iran, bringing the total number of deaths to 17.

The deaths reflect the complicated reality that American boots don’t need to be on the ground for there to be lethal risks in a conflict that involves drones, missiles and airplanes. American forces are arrayed across the Middle East, making other nations targets of Iran as the fighting has escalated after a breakdown in peace talks.