Which of the following is NOT one of the four fundamentals of marksmanship?

Data Analysis is not one of the four fundamentals of marksmanship. The four fundamentals are proper breathing, trigger squeeze, steady position, and aiming. These fundamentals focus directly on the physical skills and techniques shooters must develop to improve their marksmanship. Proper breathing helps stabilize the body and prevent excessive movement, which could affect accuracy. Trigger squeeze is crucial for controlling the shot and avoiding flinching. A steady position ensures that the shooter has a stable platform from which to aim and fire. In contrast, data analysis involves evaluating shooting performance and conditions, which, while beneficial for improvement, does not fall under the essential skills required for executing each shot effectively.