Is it possible for a Military Transport aircraft....?

Question

Is it possible for a U.S. Military Transport aircraft to make a flight from USA to UK without having to land in Shannon, in the Republic of Ireland, to be re-fuelled?

Assuming that the Republic of Ireland remains a neutral country, and presumably such operations carried out in U.S. Military Transport aircrafts are classified, why not send out aircraft from UK to re-fuel the transport aircrafts in mid-air over international waters?

I believe I am correct when I say Hercules aircraft can fly from say Oxford in UK to Virginia in the USA without having to re-fuel anywhere mid-route...?

I include 2 links where I base my assumption and question on -

Republic of Ireland neutrality info - http://www.nationalarchives.gov.uk/docum...

The reason for my question - http://www.barder.com/ephems/598... - in particular the book Ghost Plane by Stephen Grey (I include this final link as an aside http://www.barder.com/ephems/414)...

Answer 1

The American C5 and C17 cargo aircraft can be refueled in flight by either the KC135 or KC10 refueling aircraft.

These aircraft can also carry an additional flight crew so crew members can be swapped in flight as necessary.

So technically, these aircraft don't need to land to be serviced until they reach their destination, no matter where it is.