Final answer:
The NAVSUP FLC Contracting Officer must provide a port cost estimate in a timely fashion upon receipt of a LOGREQ, but the specific number of hours is not provided in the question; this would be stated in the relevant logistical support documentation.
Step-by-step explanation:
The question pertains to a specific protocol within military logistics, particularly NAVSUP FLC (Naval Supply Systems Command Fleet Logistics Center) operations. When the Supply Officer receives a Logistics Requirements (LOGREQ) message, the Contracting Officer is responsible for providing an estimate of the port-related costs. Timeliness is critical in military operations; however, the question does not specify the exact number of hours for this procedure. In standard practice, turnaround times for such estimates would be outlined in the logistical support documentation or operation orders relevant to the specific military branch or mission.