<Ul> <Li> In the pilot episode, Nicky is portrayed by Marlene Lawston . </Li> </Ul> <Li> In the pilot episode, Nicky is portrayed by Marlene Lawston . </Li> <Ul> <Li> Jack Reagan, Danny and Linda's older son, born circa 2000 . He is portrayed by Tony Terraciano . </Li> <Li> Sean Reagan, Danny and Linda's younger son, born circa 2004 . He is portrayed by Andrew Terraciano, Tony's younger brother . </Li> </Ul> <Li> Jack Reagan, Danny and Linda's older son, born circa 2000 . He is portrayed by Tony Terraciano . </Li>

Who plays danny's sons on blue bloods