What brevity term indicates sighting a target, non-friendly aircraft, or enemy position?

The term "Tally" is used in military communication to indicate that a unit has visually acquired a target, whether it’s a non-friendly aircraft, an enemy position, or a specific target of interest. This term is particularly important because it conveys that personnel are aware of the target's location visually, which plays a crucial role in coordinating fire support and ensuring situational awareness on the battlefield.

In contrast, "Captured" typically refers to the confirmation that a target has been successfully acquired or that specific actions have been taken regarding that target, but it does not explicitly indicate visual sighting. "Spot" is more commonly associated with the act of directing attention toward a target but does not confirm visual recognition. "Deadeye," while relevant within the military context, usually pertains to precision in hitting a target rather than visually acquiring it. Therefore, "Tally" stands out as the clear choice for denoting that a visual sighting has occurred.