Transit Visa Question

[immihelp]

Hello,

Please can you help my Jamaican friend living in Turks and Caicos on a temporary work permit wants to fly to Dublin in Ireland..for a 2 week holiday. Visitors to Ireland ,apparently don't need a visa, so the American Airways flight from T.C.I. has to make a stop for a connecting flight in the U.S.A. Does transit visas still apply{C2}? And how can it be applied for in T.C.I. by a Jamaican and are they considered "single -entry " and what happens on her return journey.

Many Thanks

[immihelp]

He needs transit visa http://www.immihelp.com/visas/transitvisa