Klingon Bird-of-Prey (Unidentified)

An unidentified Klingon Bird-of-Prey acting as an armed adversary to the USS Enterprise‑D. The vessel functions as a hostile Klingon military unit: it engages in direct combat, employs cloaking capabilities, and is crewed by unnamed Klingon officers. In the processed scene the ship becomes enveloped by a shimmering anomaly, re‑cloaks, and departs with no sensor returns, forcing the Enterprise into emergency command and defensive action.