CEO of Germanwings Thomas Winkelmann and Lufthansa CEO Carsten Spohr, left, lay a wreath of flowers at a stone slab erected as a monument in memory of the victims, near the site of the Germanwings jet crash, in Le Vernet, France, Wednesday, April 1, 2015. The heads of Lufthansa and its low-cost airline Germanwings are visiting the site of the crash that killed 150 people amid mounting questions about the co-pilot and how much his employers knew about his mental health.
Claude Paris Associated Press