CEP is the the

median miss distance; it is also known as the

Circle of Equal Probability. The CEP,

expressed as a

distance,

defines a circle about the

aim point. Half of the

weapons dropped/

launched/

fired at this point will strike inside this circle, and half outside. Their actual miss distances may vary wildly, making the

*average* miss distance much larger than the CEP.

This value is used by targeteers to determine roughly how many weapons are needed to achieve a desired **Damage Expectancy (DE)**.