![Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL](https://united-states-air-force.org/wp-content/photos/Silent_Sentry_Final_Flight_23_COIN_Northrop_Grumman_USAF_DSO_ULA_Los_Alamos_SNL_01_ug.jpg)
![Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL](https://united-states-air-force.org/wp-content/photos/Silent_Sentry_Final_Flight_23_COIN_Northrop_Grumman_USAF_DSO_ULA_Los_Alamos_SNL_02_nlpg.jpg)
![Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL](https://united-states-air-force.org/wp-content/photos/Silent_Sentry_Final_Flight_23_COIN_Northrop_Grumman_USAF_DSO_ULA_Los_Alamos_SNL_03_rlpp.jpg)
![Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL](https://united-states-air-force.org/wp-content/photos/nasu.gif)
This is a very hard to find challenge coin! Issued to commemorate Silent Sentry Final Flight 23 by Northrop Grumman USAF DSO ULA Los Alamos & Sandia Nat’l Laboratories. Only authentic items, directly from a Space Coast household with contacts who work in the space industry and military programs.
![Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL Silent Sentry Final Flight 23 COIN Northrop Grumman USAF DSO ULA Los Alamos SNL](https://united-states-air-force.org/wp-content/photos/nasu.gif)