Operation Taconite — the Coast Guard’s largest domestic icebreaking mission in the northern Great Lakes; it keeps routes open for massive iron‑ore shipments from the Head of the Lakes to steel mills (Lake Erie/Lake Michigan) and establishes/maintains ice tracks for commercial ore carriers. Operation Coal Shovel — a Great Lakes sector operation (Sector Detroit) covering southern Lake Huron through the St. Clair–Detroit River system into Lake Erie/Lake Ontario and the St. Lawrence Seaway; it focuses on keeping coal and other commercial transits moving, enabling search‑and‑rescue and flood mitigation, and opening channels to icebound communities. Operation RENEW (Reliable Energy for Northeast Winters) — a Northeast operation (Maine–New Jersey) to keep vital shipping lanes open for home heating oil and other petroleum deliveries (the majority of Northeast heating oil is moved by vessel), to sustain energy security and allow delivery of fuel, medical supplies and other essentials.