Ade Carver reports on the Anglian Military Aviation Group Facebook group two Afghan C-130Hs arrived on Mildenhall early evening.
According SBS these should be 74-1675 as RCH556 (showing as DELR13 on SBS) and 74-1677 as RCH550. This is also supported by the pictures on FB as the only markings are an Afghan roundel on the vertical stabilizer and the last four of the USAF serial at their usual location on the side of the nose.
BR,
Jeroen