Christian was trained as a paratrooper in the Army and then joined Northwest Orient Airlines as a mechanic. He collected newspaper clippings of everything that happened to the airlines, but strangely never collected anything about the Cooper case. When Kenneth died of cancer in 1994 of cancer, his family found gold watches, a valuable stamp collection along with $200,000 in bank accounts. The FBI claim that poor match to eye witness description, and not enough direct incriminating evidence to convict Kenneth Christiansen of the crime.