Which of the following is NOT a part of the sampling identification number?

In the context of sampling identification numbers, the components typically include elements that help in uniquely identifying and cataloging samples collected during reconnaissance operations. These components often encompass the country of acquisition, the date acquired, and a sample sequence number, which collectively provide essential information about where and when a sample was taken, as well as its order in a series of samples.

GPS coordinates, while highly useful for situational awareness and precise location tracking, do not form a standardized element of the sampling identification number. Instead, they serve as supplementary information that can be recorded alongside samples to enhance field data management but are not a required part of the identification number itself. Therefore, this distinction clarifies that GPS coordinates are not formally included in the sampling identification system used for CBRN reconnaissance operations.