History professor David Rhodes never has got over the death of his older brother, 1966 in Vietnam. When he hears the rumor that a famous professor is working on a time machine, he immediately contacts him and persuades him to allow him to travel back in time and correct history. If he could save President Kennedy's life, Vietnam war might never have happened! Written by Tom Zoerner <Tom.Zoerner@informatik.uni-erlangen.de>