They announced via [Twitter](https://x.com/sierraspaceco/status/1735645890554007998?s=46&t=KlPZtePbiKVewdfqLpkKzA) 30 minutes ago saying:
Dream Chaser Tenacity is at NASA’s Neil Armstrong Test Facility and set to be vertically stacked in launch configuration with Shooting Star. The two vehicles will soon be subjected to the extreme conditions of launch vibrations.
by KatherineNoals