Why was Nick's dad at the Walter Reed Army Medical Center?

Nick's dad was at the Walter Reed Army Medical Center because he lost his right arm in combat. This answer highlights a specific and significant event that aligns with the context of a military hospital like Walter Reed, which provides care for veterans and active duty service members, particularly those with severe injuries sustained during service.

The mention of losing a limb in combat resonates with the types of traumatic injuries treated at this facility, underscoring the sacrifices many military personnel make. This information gives a deeper emotional layer to the character's situation, illustrating the impact of war on families.

Other choices do not reflect the likely scenarios that would lead someone to seek specialized care at this renowned military medical center. Accident-related injuries, surgery, or routine checkups would typically have different settings or might not necessitate visitation to a facility known primarily for its rehabilitation programs and specialized services for combat-related injuries.