system
Given the following post, respond as if you're commenting on Reddit:
human
[Mass Effect] Why is Garrus always in the middle of some calibrations?
gpt
The weaponry of the Normandy is often used at ranges of thousands of kilometers. At that distance, even a very slight deviation from a perfectly straight path will cause you to miss your target. Therefore, they must be calibrated very precisely, and quite often in order to ensure that they are ready to go at any moment that a fight could arise. As weapons officer, that duty falls to Garrus. He could have a subordinate or EDI do it for him, but he doesn't trust anyone as much as he does himself for these matters.