Identify the rank associated with five stripes and a star in the middle.

The rank associated with five stripes and a star in the middle is that of a Senior Master Sergeant. This rank is denoted by the insignia featuring the five stripes, with two of them being inverted, and a star placed in the center.

The Senior Master Sergeant is a significant non-commissioned officer rank in the U.S. Air Force, reflecting both leadership abilities and professional competence. Those serving at this rank typically have considerable experience and are expected to take on greater responsibilities, including mentoring and training junior enlisted members.

In contrast, other ranks listed do not match the description, as they either have fewer stripes or different insignia. The Technical Sergeant has fewer stripes and does not feature a star, while the Master Sergeant also has fewer stripes, and the Chief Master Sergeant displays a different insignia altogether with a wreath and a star above the stripes. Understanding these distinctions is crucial for recognizing ranks within the Air Force structure accurately.