As the commander of Air Station Kodiak retires, the Cost Guard ramps up on dramatic SAR cases including a flight to pick up a fisherman gone overboard and a medevac for a badly injured veteran. And when a colossal oil rig goes rogue with eighteen souls trapped aboard, the Guardsmen take on a daring rescue mission.

The men and women of Air Station Sitka take on three perilous missions including an intense medevac for a heart attack victim on the brink of death, a risky hoist down to a fishing vessel taking on water, and a nighttime search along the frigid coastline for a fisherman lost ashore.

Wild turbulence, freezing temperatures and extreme heights are some of the obstacles facing the Coast Guard in Kodiak as they come to the rescue of a patient in a remote town, a boater stranded on a freezing beach and a hunter trapped in the mountains.

Air Station Sitka responds to a call to medevac a man suffering from internal bleeding. Meanwhile, the Coast Guard in Kodiak gear up to rescue kayakers stranded in the ice, a man with several broken ribs, and the severely beleaguered crew of an overdue fishing vessel.

A sailboat loses its engines in rough seas;a sick child in a remote Alaskan village; a man in grave condition aboard a charter vessel.

Amidst low visibility, the guardsmen in Sitka rush to medevac an elderly male in critical condition. Air Station Kodiak battles challenging weather and rough terrain to rescue a missing hiker stranded on a dangerous cliff, a crew from a tugboat that's aground and an elderly male injured in the mountains.

Air Station Sitka launches to save a man who suffers a bad spill while riding an ATV. The team takes on back-to-back cases for a man who falls on a charter vessel and a woman with a serious back injury. The Coast Guard diverts to the scene of a sightseeing vessel taking on water with 84 people on board.

Air Station Sitka is launched on three time-sensitive missions for a fisherman with severed fingers, an injured hiker, and a cruise ship passenger experiencing stroke-like symptoms.

Air Station Kodiak moves rapidly to rescue a boat crew who has abandoned ship, a man suffering severe injuries after an ATV accident and a boat crewman suffering from internal bleeding. In Sitka, the crew launches to medevac a woman off of a cruise ship.

Air Station Kodiak launches to medevac a man suffering from heart attack symptoms. Sitka aircrews are on high alert as they search for a downed aircraft with 7 people on board, and for two boat crewmen who have gone overboard.

Air Station Sitka pushes through low visibility to rescue a man crushed in a motor vehicle accident, while Air Station Kodiak launches on a long-range mission to medevac a male suffering a brain injury. In Cordova, aircrews launch to medevac a boat crewman suffering a stroke and provide assistance to a vessel taking on water.

Air Station Kodiak opens their arms to a young man battling a life-threatening illness. Meanwhile, the crews launch to medevac three boat crewmen affected by a deadly chemical leak and a male crushed by a tractor. A Sitka aircrew is diverted to medevac a male suffering a heart attack.

Lured by Alaska's beauty, four individuals find themselves in need of Coast Guard assistance - a woman fulfilling her dreams of fishing in Alaska suffers intense abdominal pain, hikers are stranded overnight in the frigid cold and a man suffers severe injuries after a biking accident.