Final answer:
Sam and Gloria are examples of boundary-spanning personnel who deliver services outside the firm's physical facilities.
Step-by-step explanation:
Sam and Gloria, who deliver services outside the firm's physical facilities, are examples of boundary-spanning personnel. They act as intermediaries between the firm and its customers, partners, or other stakeholders. This role requires them to interact with people outside the organization to gather information, resolve issues, and build relationships. Roaming salespeople, expanding service providers, and regional responders are not accurate descriptions of their role.