Which jacket color represents a personnel member assisting in physical treatment or first aid during UNREP?

The correct choice is the white jacket with a red cross, as this color combination specifically designates a personnel member who is trained and responsible for providing first aid or physical treatment during an Unrep (Underway Replenishment) operation. The white color signifies that the individual is not part of the primary transfer team, while the red cross universally symbolizes medical assistance, indicating their role is to respond to any medical needs that may arise during the replenishment process.

In contrast, the yellow jacket is typically worn by personnel in charge of the rigging and handling of equipment during the operation, while green jackets are often used to denote deck crew or safety personnel. Blue jackets may represent other specific functions that do not include medical responsibilities. This clear color-coding helps to ensure an efficient and safe operation by allowing all personnel on-site to quickly identify who is responsible for health and medical support in a busy and potentially hazardous environment.