A look inside Marine One

NBC's Today show gave its Monday viewers a peek inside one of the world's most unique forms of transportation: Marine One.

The special military helicopter ferries President Obama to Joint Base Andrews and other nearby destinations; presidents since Dwight Eisenhower have been flying aboard Marine One.

An NBC News crew got access to Marine One as it practiced takeoffs and landings on the South Lawn of the White House.

Marine One and its security escorts are the only aerial vehicles allowed in the airspace above the White House.