The Marine Corps is using a requirements evaluation team method to pursue future amphibious ships, according to the service's commandant. Gen. David Berger said yesterday the Marine Corps would employ a "concurrent" approach -- rather than a "sequential" one -- to the acquisition of a new class of ships. "It's not sequential, where we -- the Navy, Marine Corps -- figure out what we might think we need, then we get with industry, then we go back and forth for...