English Voices for Mercenaries (BMS HECU) addon - S.T.A.L.K.E.R. Anomaly mod for S.T.A.L.K.E.R.: Call of Pripyat
Just a simple mod to replace the Merc's Ukrainian dialogue with English voices to better immerse the player with their foreign friends or foes from the West. Uses Black Mesa's HECU voices, which work well for combat and are quite punchy.
Source: moddb.com