By Steve Wittich Scott Dixon during the second day of practice for the 104th Indianapolis 500 presented by Gainbridge Photo Courtesy of INDYCAR – James Black) The green flag came out to start the final three hours of practice, Newgarden, Rahal, Power, Ericsson, Kellett, Pagenaud, Karam, Rosenqvist, O’Ward, Veach, Hunter-Reay and Sato all took to…