the falcon and the snowman be base on a true story . christopher boyce and and andrew daulton lee and ( the titular traitor and ) play by timothy hutton and sean penn and receive their code name from the kgb . why . boyce be an avid falconer and lee be a coke head . the movie be base on a true story . it base on the book of the same name . another reviewer ask what be their motivation . disillusionment it ain not . ideology it ain not . ( pardon my bad grammar and ) but i be make a point here . what be it if it wasn not disillusionment or ideology . in a word and greed . by the time of the boyce lee case and money become the great motivator and not ideology . don not believe me . then look at the walker family spy ring which be break in the late 80 . three spy do the bad damage to our national security in the 70 and 80 . john walker and who begin his career a a spy in the 60 and christopher boyce and and andrew daulton lee . all three sell out this country for thirty piece of silver . if you aren not familiar with that phrase and i suggest you read the bible .