Rutland's Mercenaries (SMG)
From Tomb Raider Wiki
These merecenaries are among the first that Lara comes across in Bolivia. They wear thick jackets to combat the cool climate of the Bolivian Highlands, wear dark glasses against the glare of the sun and are dressed so that they can run and move easily through the rough terrain.
They are one of the most common mercenaries employed by James Rutland and Amanda Evert, the other being Rutland's Mercenaries (Assault Rifle). They are fairly easy to dispose of and don't have much of a defense against Lara's onslaught.