Does anyone know why susanville interagency is missing on wildcad?
Because Altaris cad, not wildcad.
The Susanville Interagency Fire Center does not use Wildcad. They use Altaris Cad.
Altaris CAD is the CAD system that CAL Fire uses and since susanville is a joint CAL Fire and USFS dispatch they use the CAL Fire CAD system. Its that way in any CAL Fire/USFS command center in the state.
Not every joint dispatch center is that way. The Sierra NF and CalFire have a share the same dispatch but use separate CAD systems.