yes jack has the same tatoo. you see it in one shot when he's setting his watch timer and pulls his sleeve. i think it was in the first season (or was it second) when jack had to go against another one of his black op buddies who turned bad.
dunno what the deal is with ramon and his brother. and for that matter why they put so much effort into pursuing that teenage kid.
and how is it tony, jack, and guy-el (haha) come up with this plan to reinsert him w/o informing ryan?