Given the rigorous demands of aerial operations on the human body, this study aims to investigate the body composition differences among aircrew specialties, specifically between medical personnel and mechanics within the Air Force. By examining key body composition metrics such as fat mass, lean mass, and body water, the study seeks to uncover how these variables correlate with aircrew members' distinct occupational duties and overall health. Initial findings indicate subtle but significant body composition variations between groups, suggesting occupational roles may influence physical attributes. There were small differences in body composition between mechanics and medical personnel, primarily based on a greater body mass index, weight, body water, skeletal muscle mass, soft lean mass, and fat-free mass of the mechanics. Body composition analysis by segments suggest a better muscle activation during their duties, but worse nutrition habits in mechanics when compared to medical personnel. This underscores the importance of designing occupation-specific training and nutrition programs to optimize the health and operational performance of aircrew members across specialties.