To be eligible for the award, a service member must be: attached to or regularly serving for one or more days with an organization participating in ground/shore military operations; attached to or regularly serving for one or more days aboard a naval vessel directly supporting military operations; actually participating as a crew member in one or more aerial flights directly supporting military operations in the areas designated; or serving on temporary duty for 30 consecutive days or 60 nonconsecutive days, except, if a waiver is authorized for personnel participating in actual combat.