[taillightchaser]

Wonder why they're not using the newer KC-10s over there??

[A.A. Cunningham]

They're passing gas over Iraq.

KC-10 Extender takes over in-flight fueling job

Last pair of white world KC-135’s depart

[tanknetter]

Wonder why they're not using the newer KC-10s over there??

There's a LOT more KC-135s than there are KC-10s. And the KC-10s, with their ability to refuel both boom/receptical aircraft of the USAF and the probe/drogue aircraft of the USN/USMC, the Brits and most of our allies, are more valuable deployed into an environment where there is greater diversity of assets ... like Iraq

(Although I should mention that some USMC, RAF and coalition aircraft are deployed to Afghanistan. While there are some -135s equipped with wingtip probe/drogue pods, my recollection is that the probe/drogue needs in Afghanistan are being handled by RAF tankers).