Bogey

A bogey is a vessel which has been detected visually or by sensors, but has not been identified.

Part of the mission of the 10th Squadron of the Fifth Fleet in 2376 was to watch for and identify bogeys flying in the vicinity of the Federation-Cardassian border. Under the rules of engagement, if the vessel is identified as being a "warbug", it is to be considered a hostile vessel, also known as a "bandit." (, "Like the Rain")

Background
The terms "bogey" and "bandit" are derived from contemporary brevity codes and have been utilized significantly in.