Silentbarker

File:ULA Atlas V rocket rollout (7990859).jpg

Silentbarker is a class of classified United States spy satellites for space domain awareness developed by US Space Force and National Reconnaissance Office.{{Cite web |title=Silentbarker |url=https://space.skyrocket.de/doc_sdat/silentbarker.htm |access-date=2023-09-12 |website=Gunter's Space Page |language=en}}{{Cite web |author=Stephen Clark |title=US spy satellite agency isn’t so silent about new "Silent Barker" mission |url=https://arstechnica.com/space/2023/08/us-spy-satellite-agency-isnt-so-silent-about-new-silent-barker-mission/ |date=29 August 2023 |website=Ars Technica |language=en}}{{Cite web |author=Stephen Clark |title=ULA’s Atlas V rocket has launched for the first time in nearly a year |url=https://arstechnica.com/space/2023/09/united-launch-alliances-atlas-v-rocket-has-a-long-sunset-ahead-of-it/ |date=11 September 2023 |website=Ars Technica |language=en}}