Susan Zellers, P.E., AAE, ENV SP, a senior project manager at Hanson Professional Services Inc.’s Indianapolis office, recently celebrated five years of service with the company. Zellers, who joined the firm in 2015, provides leadership and technical support to the aviation planning staff for projects, including airport-related research and studies for the Airport Cooperative Research Program, site selection, master planning and noise exposure mapping. She received bachelor’s and master’s degrees in civil engineering in 1990 and 1991, respectively, from Purdue University. She is a licensed professional engineer in Indiana, Illinois and Kentucky; an accredited airport executive; an Envision Sustainability Professional; and an instrument-rated private pilot. She is president of Aviation Indiana and a member of the American Association of Airport Executives, American Society of Civil Engineers and the Illinois Public Airports Association.