 EMW was designed to fit the United States Navy's "Sea Basing" concept as outlined in the Sea Power 21 plan.This concept has influenced Marine Corps equipment procurement in recent years, leading to the purchase of the MV-22 Osprey, Expeditionary Fighting Vehicle, F-35 Lightning II and the M777 Lightweight Howitzer.Two areas of current concern are not overburdening the maneuver force with too many supplies (or worse, having them run out) and timely medical evacuation.