National Security Agency NSA Security Operations Center NSOC SIGINT Team Four / 4 Spying Challenge Coin
This coin is 1 3/4 inches in diameter. This coin has some wear from handling.
The National Security Operations Center (NSOC) or Directorate K is the part of the United States National Security Agency responsible for current operations and time-sensitive signals intelligence (SIGINT) reporting for the United States SIGINT System (USSS).[1] It is one of two centers watching; the other being Directorate V or the NTOC which assesses threats.
(REF: https://en.wikipedia.org/wiki/National_Security_Operations_Center)