Final answer:
In the event of a fire or fuel leak during hot refueling, immediately stop refueling, eliminate ignition sources, and activate emergency procedures such as using fire extinguishers and notifying response teams.
Step-by-step explanation:
If a fire or fuel leak occurs during a hot refueling operation, the first action you should initiate is to stop the refueling process immediately and ensure that all sources of ignition are eliminated to prevent the fire from spreading or becoming more intense. It is imperative to activate emergency procedures, which typically include using fire extinguishers, notifying emergency response teams, and evacuating the area if necessary. Proactive safety measures such as tying back loose hair and clothing, knowing the location of fire safety equipment, and never leaving an open flame unattended can prevent these incidents.