A police officer stands in front of an apartment building where they believe Andreas Lubitz, the co-pilot of the crashed Germanwings airliner jet, lived in Duesseldorf, Germany, Thursday, March 26, 2015, during an investigation into the crash in the French Alps on Tuesday that killed 150 people. Lubitz barricaded himself in the cockpit and “intentionally” sent the plane full speed into a mountain, ignoring the pilot’s frantic pounding on the door and the screams of terror from passengers, a prosecutor said Thursday.