What is a klick in distance?

A klick is a colloquial term used in the military to denote a distance of one kilometer (approximately 0.6 miles). It is often used to measure distances in a quick and simple way during operations. The term originated from the phonetic spelling of the letter "k" in the NATO phonetic alphabet.

In a military context, a klick can also refer to a specific distance covered in a certain amount of time. For example, a soldier might say they need to travel three klicks in 30 minutes.

Overall, a klick is a useful and commonly used unit of measurement in the military for quickly estimating distances.