In a statement, the FAA supported the decision to make first steps toward a return to the skies. "This gradual, cautious return of operation is reliant on the track of the volcanic ash cloud, which is being monitored closely. The FAA is continuing to work with the European Union and is sharing technical information and guidance based on previous experience managing weather and volcanic events that have affected portions of U.S. airspace." This is perhaps a reference to the 1980 eruption of Mt. Saint Helens and effect on aviation from the subsequent volcanic dust plume.