Regarding the success or failure of the Zuma launch...

The latest rumors seem to indicated that although the Falcon 9 launch
was succesful, the newly designed Northrup/Grumman payload adapter
failed. Preventing the satellite from separating from the F9 2nd stage
and hence Zuma went down with it when the F9 2nd stage was de-orbited as
part of the normal procedure so as to not clutter up LEO with spent stages.

No confirmation from either SpaceX or Northrup/Grumman, nor will there
be. But sparing some observation from the amateur sat watch network,
more likely than not....

https://qz.com/1175393/zuma-satellit...ret-us-launch/

Dave