Garrus hated close quarter combat. It's really not his thing. He's a sniper; He likes a clean, measured shot from a distance, where he can sit, think about it, judge the right moment, and then ventilate someone's brains. Someone who richly deserved it.

Right now? It's less-tranquil cover fire from a guarded position, for those close quarter combatants; popping off careful shots into the mass of creatures as they went building to building.

Besides--he brought someone worth four of him in close combat: Grunt.