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John Langfield is a highly experienced Senior LO Antenna Engineer at Resonant Sciences LLC since March 2022, with a robust career spanning over 38 years. Prior to this role, Langfield spent nearly 24 years at Ball Aerospace, where responsibilities included serving as Range Manager, Technology Lead/Chief Engineer, Program Design Lead Engineer, and Technician IV. Notable achievements include leading technical and operational oversight of seven anechoic chambers, managing an extensive staff, and driving significant range design and operational improvements. Langfield also has substantial experience in RF and RCS antenna design, mentoring junior engineers, and ensuring adherence to budget and schedule goals. Before Ball Aerospace, Langfield served as Construction Manager at Langfield Construction, Inc. Langfield holds a Bachelor of Engineering degree in Electrical Engineering with a focus on Electromagnetics from the University of Colorado Denver.