Final answer:
Glenn is interning at a place that offers legal services, and his role involves aiding individuals in crafting an advanced care plan, a legal document for healthcare preferences in case they cannot make decisions themselves.
Step-by-step explanation:
Glenn is doing his summer internship with a company or organization that specializes in legal services related to healthcare decision-making. In this context, Glenn's work involves helping individuals create an advanced care plan, which is a legal document that outlines a person's preferences for medical care in the event that they become unable to communicate their decisions. This type of document is crucial for ensuring that an individual's health care wishes are respected and followed by healthcare providers and family members.