Final answer:
The PIC must ensure all documents for service animals, including health, behavior, and training forms, are prepared and potentially presented 48 hours before travel or at the departure gate as per DOT regulations.
Step-by-step explanation:
The Person In Charge (PIC) on a commercial flight is typically the captain or pilot of the aircraft. When considering flying with an animal such as a service dog, PIC must ensure all necessary certificates and documents are present. According to the Department of Transportation (DOT), these documents include forms attesting to the animal's health, behavior, and training, which airlines may require 48 hours before travel or at the departure gate. Particularly, a passenger with a Seeing Eye-certified or other officially trained dog should have no problem providing these forms. Apart from this, specific regulations may apply if a person has recently undergone a medical procedure involving radioactive materials, as they are likely to set off radiation detectors at airports and might need special permission to fly.