(Kansas City, MO) -- The two pilots who landed a Southwest jet at the wrong Missouri airport last night are grounded. Southwest Airlines says the two are suspended pending a federal investigation of the landing at M. Graham Clark Downtown Airport. That airport is about seven miles away from the flight's destination airport. More than 100 passengers were on board. They had to take ground transportation to the right airport to continue their journey. The captain of the flight has worked for Southwest for 15 years.