California Raptor Center visits Travis AFB Published May 1, 2019 By Heide Couch 60 Air Mobility Wing Travis Air Force Base, California -- As part of an Earth Day event, participants were educated on raptor biology, rehabilitation, conservation and species identification during a visit from the California Raptor Center.As part of an Earth Day event, participants were educated on raptor biology, rehabilitation, conservation and species identification during a visit from the California Raptor Center.