My son graduated, turned 18 in May, had a summer job, worked in Oct, enlisted in the army reserve, went to boot camp Nov-Dec made about $8,000. Does he do his own taxes?

I still supported him while he had his summer job and his job in October because he lives with me.  He started his boot camp training In November and was paid for the months of November and December.  I'm not sure if I can still claim him as a dependent or if I have to add his wages to my taxes or if he has to be a complete separate single filer.