SimplySocial chief executive Tyler Arnold caught on video the Alaska Air National Guard rescue of a Flattop hiker Tuedsay. Marc Sierra, 51, was hampered by an injured knee.

Luckily for Alaskans and tourists who get into trouble in the 49th state, the Alaska Air Guard wing at Joint Base Elmendorf-Richardson is home to one of the U.S. military's most elite units -- the 210th and 212th Rescue Squadrons.

Part of the unit just shipped out for Afghanistan to perform those duties. The pilots and parajumpers who stayed behind were doing what they often do in Alaska on Tuesday night -- saving people in trouble in the wilderness.