Smithsonian Channel HDTV (East) (SMITHHD)

A search and rescue plane for the Canadian Air Force is profiled. (Repeat).

The world's fastest, strongest, and most remarkable trains. (Repeat).

A crew of 2,200 on the Symphony of the Seas tends to more than 5,500 passengers as they sail to ports in Spain, France and Italy. (Repeat).

The world's biggest river-cruising company makes a big splash in the ocean-cruising industry. Visiting southern Spain, Normandy and the canals of Amsterdam, the crew navigates narrow passages and battles rough seas. (Repeat).

In the Season 2 premiere, Carnival Vista carries more than 4,600 passengers and boasts 10 restaurants, nearly 2,000 staterooms and a crew of 1,400 ready to tend to guests' every need. (Repeat).

Spotlighting the Norwegian cruise ship Epic. (Repeat).

A breakdown on the Fairbanks runway threatens a heavy-weight military jet's urgent mission. A rookie flight instructor faces a make-or-break flight. An ice-tour pilot races against Alaskan weather, and a bush airline flies a 400 (Repeat).

Witness wild weather, emergency landings, and animal invaders at Ted Stevens International Airport in Anchorage, Alaska one of the world's busiest cargo airports. (Repeat).

A suspected toxic leak grounds a 737 at Anchorage International, engine trouble endangers the mid-air refueling of the USAF's most advanced fighter jets in Alaska, and a discovery at airport customs busts a potential smuggling. (Repeat).

A national snowstorm brings US aviation to a standstill, but Anchorage fights through the storm. USAF aircrews endure the toughest survival training on Alaska's North Slope, and a veteran aircraft flies life-saving cargo. (Repeat).

A family-run airline flies emergency supplies to a remote village hit by water pollution. Then, Alaska's biggest cargo airline loads high explosives on a busy runway, and Anchorage's elite pilots come to the rescue of a holiday party. (Repeat).

Record-breaking snow in Anchorage could shut the airport. Then, a novice pilot tests his nerve landing on a frozen lake, and USAF aircrews battle the toughest Arctic survival training. (Repeat).

Hurricane Hunters fly into a storm to save lives in Alaska's bush. Then, a rookie chopper pilot faces dangerous winds, and snowstorms threaten vital combat training for USAF in the Arctic Circle. (Repeat).

Travelers from Anchorage get stranded halfway to an island in the Bering Sea; extreme skaters fly into the wilderness in search of Wild Ice; and Alaska's premium cargo airline fights to deliver a team of huskies. (Repeat).

Alaska's aviators fly into the wild for the world's toughest snowmobile race, Anchorage mechanics wrestle with a damaged 737's jet engine, and scientists take to the air to fight back against floods devastating remote communities. (Repeat).

A bush plane resupply mission to homesteader on a frozen lake teeters on the brink of disaster, US Air Force fighter jets battle over the Alaskan tundra, and veterinarians fight winter storms to save a remote village. (Repeat).

A 747 mayday triggers an emergency on Anchorage runways. Then, a young aviator learns to fly to feed her village, military pilots navigate Alaska's icy peaks to be combat-ready, and an extreme surfer flies high to find waves. (Repeat).

A pilot dreams big trying to move a 727 jet cross-country to build his business. Tourists fly into Homer's fishing festival, and bar owner takes to the air for an Alaskan beer run. Engineers fight to stop the corrosion aboard a (Repeat).

An orphaned bear cub flies to a new home, bush pilots bring life-saving medical machinery to a remote village, record snowfall threatens to close down Anchorage Airport for Thanksgiving, and the US Army prepares for airborne war (Repeat).