The Activating model makes a Ranged Attack, targeting an Enemy model and may make a Walk up to its move in inches either before or after the Ranged Attack is resolved.
You must declare whether you will walk as part of declaring the action.
The model cannot make a Ranged Attack while in BtB or within the ZoC of an Enemy model. A model making a Ranged Attack may be referred to as “The Attacker”.