In the wake of recent plane crashes across the U.S., a former Phoenix-based pilot has voiced concerns over air traffic controller staffing levels, a sentiment mirrored by Arizona aviation instructors amid national grief for the loss of 67 lives in a collision between a passenger plane and a military helicopter. According to a FOX 10 Phoenix report, ex-pilot Cpt. Ron Nielsen highlighted a significant decrease in individuals entering the aviation industry, describing the air traffic control profession as “very technical, complicated” and facing staff shortages…