What brevity term signifies acquisition of laser designation, or that the platform is laser spot tracker (LST) capable?

The correct answer is associated with the term "Spot," which is used in military communications, specifically in the context of fire support and targeting. When a platform indicates it has acquired laser designation or is capable of functioning as a laser spot tracker, it conveys the critical information that it can detect and track the laser energy reflected off a target.

This is essential for precision-guided munitions, as the ability to spot a laser designator ensures that engagement can occur accurately and effectively. The use of "Spot" signals to the joint forces that the target is now marked and ready for engagement, thus enhancing situational awareness and coordination during operations.

The other terms in the question serve different purposes in military communications. For instance, "Capture" typically relates to gaining an initial hold on a target or data, while "Contact" often refers to establishing a recognized engagement with an enemy or target. "Acquire," meanwhile, is more general and may simply suggest gaining awareness or identification of a target but does not specifically indicate the capability associated with laser tracking as "Spot" does.