Sh1n reposted an update from DefenceGeek reporting a significant increase in U.S. KC-46 and KC-135 tanker movements, particularly returns to European bases.

DefenceGeek wrote:

UPDATE: They're Coming Back Now... #IranWar‌

As I've noted in the last 48hrs, the number of US KC-46 and KC-135 tanker aircraft returning to the region (particularly to European bases) has surged significantly, as the graph below shows. There are also early signs of more movements/returns planned tomorrow...

The last time the data saw a spike this steep was mid/late-February just before Operation EPIC FURY began.

@MATA_osint

The update quoted an earlier post from DefenceGeek providing the reported totals:

UPDATE: They're Coming Back Now... #IranWar

As of this morning, we're now at 17 tankers returned to Europe, and 3 more moved from US west coast to east coast in preparation to cross.

That's just in the last 48-72hrs.

Most of the airframes are ones that left in September...
@MATA_osint