The Marine Corps intends to purchase between 80 and 100 Group 5 unmanned aerial systems envisioned to take on a variety of mission sets and operate from a large-deck amphibious ship or Navy destroyer, according to a service official. "For the Marine Corps, we generally do things in threes for the three aircraft wings that we have active," Col. James Frey, the director of the Marine Corps' Aviation Expeditionary Enablers branch, told reporters yesterday. That planned buy would provide each...