Initial information regarding the suspected shooter (May not have fired a shot) at CP for any interested in doing research on his background.

He is/was an actor albeit not a very accomplished one: http://www.imdb.com/name/nm2625901/

Where he attended school: https://cfcc.edu/

A traffic collision with a pedestrian: http://m.wbtv.com/wbtv/pm_131222/contentdetail.htm?contentguid=bz3KDAFg

Places to start looking for a connection, though the actor angle caught my eye right away. It is still entirely possible he was there on his own accord to investigate Comet Pizza, however, there are conflicting reports at the moment as some articles were mentioned in which the police cleared pizzagate as a motive. Also conflicting reports from witnesses about events, gear and etc.