Part 5/12:
The session dives into diagnosing defensive formations like nickel packages—defenses with extra defensive backs—and how to adapt protection based on their setup. For example, a "straight 42 nickel" involves specific alignments where the center is uncovered, meaning no lineman directly over him. Recognizing this allows the quarterback and center to execute calls such as "Ron" or "Lou," directing the center to shift toward the right or left, respectively.