PA - Physician Assistant Humming bird capital of the USA The Community - Sierra Vista, AZ World-renowned for birding and military history, we also have caving, hiking trails with varying difficulty ratings, outstanding mountain biking trails, observatories, hang gliding and ballooning, symphonies and ballets, rodeos and cowboy music gatherings, and vintage car shows. And that's not all. There are golf tournaments, festivals and events, banding, and mid-western style summer concerts in the park.…