The SCP Foundation employs thousands of security personnel as they see fit. When things escalate at the tower, they send in a task force of five specialists (they're just guards, really). One of them is Graham, who goes by MTF Mod-5. At some point during their expedition, all hell suddenly breaks loose. So naturally, they all enter a state of fear and panic.

Graham is a bit of a minor character, but should still have a distinct voice. For speaking tone, try going for a more realistic approach rather than an exaggerated one. He's experienced in combat, but sounds like a normal human being--not a badass.