Police Investigate Role Of Germanwings Co-Pilot

MONTABAUR, GERMANY - MARCH 27: A general view of a sign marking the entrance to the LSC Westerwald airfield, where Andreas Lubitz co-pilot of Germanwings flight 4U9525 first learned to fly, on March 27, 2015 in Montabaur, Germany. French authorities confirmed that Lubitz was alone in the cockpit during the rapid descent of flight 4U9525 until it crashed into mountains in southern France three days ago, killing all 150 people on board. Authorities are pursuing the possibility that Lubitz acted deliberately in steering the aircraft to its destruction. (Photo by Hannelore Foerster/Getty Images)