The Marine Corps ' new littoral regiment is less than two years old and growing as the service contends with how to resupply and sustain it in the vast Pacific region, where China's military influence is casting an increasing shadow. Col. Peter Eltringham, commander of the 12th Marine Littoral Regiment, said in an interview with reporters Tuesday that logistics will be a key challenge that Marines will have to overcome, given the proliferation of drones, missiles and China's reach. The regiment