This and the above `$on()` are already done in `bastion.module.js`: https://github.com/Katello/katello/blob/master/engines/bastion/app/assets/javascripts/bastion/bastion.module.js#L150 so you shouldn't need to duplicate this here.  If you need to set the `defaultBackState` above you could place `fromState` and `fromParams` on the `$rootScope` in `bastion.module.js`.