John Pallister is a recently retired Senior Reseach Geologist at the U.S. Geological Survey in Vancouver, WA. John has a long, varied and distinguished career, most recently as coordinator for the USGS’s VDAP program. VDAP is the Volcanic Disaster Assistance Program, an international project to monitor volcanic eruptions around the world. John spoke to the QGS at the Port Townsend Aero Museum in Sept. 2018 on “Volcanic hazards to aircraft and the VDAP. (Updated Oct. 2021)