Department of Homeland Security Chief of Staff Christian Marrone speaks to a Penn State security and risk assessment class on Wednesday.
Department of Homeland Security Chief of Staff Christian Marrone speaks to a Penn State security and risk assessment class on Wednesday.
Department of Homeland Security Chief of Staff Christian Marrone speaks to a Penn State security and risk assessment class on Wednesday.

Penn State alumnus Christian Marrone shares insights into work helping to lead Department of Homeland Security

October 29, 2014 06:18 PM