Troubled youth to say the very least. Skipping school to hang out with his friends was his primary concern in his teen years, so much so that'd it'd land him in truancy court with his absentee parents several times a year. Though the court and his parents pleaded with him, it'd inevitably fall on deaf ears. His grades in school, surprisingly, did not suffer so much for him to not be able to eventually graduate.
Regardless of his 'success' in passing the education standard's most basic milestone, Thomas would still find himself in trouble at the tender age of eighteen. Left with no real life skills and the only other alternative being working in his father's ramshackle convenience store, Thomas did what any smart kid would do and enlisted in the United States Army. It was here, against all odds, that he'd find his calling. The structure and discipline provided by his service allowed him to reform himself into an upstanding member of society, though the retained his smart mouth in the process. Still, he did excel in the armed forces, so much so that he made it his career.
Fast forward several years; Chernarus. When the outbreak occurred, his unit was flown in via transport planes and stationed in Chernogorsk. (Constant work in progress, this is just a placeholder for now.)