Someone called the DPD and said they were going to kill Oswald but whoever took the call just put the phone call into the " that won't happen bin " and just acted like it was a phony call and that Oswald would be safe while under the watchful eyes of the DPD . Wrong ! It's surprising that not only did Ruby get that close to LHO to shoot him but he was putting himself in a very guilty setting as cameras were rolling and of course the picture that was taken of Oswald being shot by Ruby would win the photographer Bob Jackson the Pulitzer prize for photography . For the photographer Ira Jefferson " Jack " Beers Jr. taking the photo 6/10 tenths of second ahead of Jackson's photo , was something he never got over ! Timing is everything ! The police knew Jack Ruby and if someone did see Ruby go down that ramp and saddle up in position to step out and shoot LHO they probably just thought ,oh hell that's just Ruby who liked being in the spotlight , no matter what ! Ruby had gotten in on the midnight covering of Oswald and corrected the police on the naming of " The Fair Play for Cuba " How would Ruby know about the Fair Play for Cuba ?