These commandos armed with lirpas were sent by the Vulcan High Command to apprehend Jonathan Archer, T'Pau and T'Pol from the Syrrannite compound.
During the later confrontation, T'Pau and Archer escaped, but T'Pol was eventually captured. Archer attempted a rescue and overpowered the commandos by striking them with electrical discharges of the gallicite deposits, however the third commando had already taken T'Pol away to return her to the High Command. (ENT: "Kir'Shara")
