When initiating Cold Ops, what does an F-15 say?

In the context of initiating Cold Operations (Cold Ops), the term used by an F-15 pilot is "Reference." This term is part of the standard communication procedures within the operational context of military aviation, specifically related to situational awareness and coordination when initiating specific operational protocols.

Using "Reference" indicates that the pilot is drawing attention to a specific point, target, or instruction that needs to be acknowledged by the team or by other aircraft in the formation. It plays a crucial role in ensuring that all parties are aligned and aware of the action being taken, particularly during the sensitive phases of military operations where clarity and coordination are vital for mission success.

The other options do not serve the same purpose in the context of initiating Cold Ops. "Flow," for instance, relates to the movement of aircraft and maintaining proper formation, while "Engage" signifies an active engagement with a target or threat. "Proceed" is a more general term that could imply moving forward without the specific directive nature that "Reference" provides in this particular operational context.