Well, seeing how the 150th Tacos are no longer flying out of Kirtland ( [link to en.wikipedia.org]
...I would say more than likely aircraft transit or training...what did the large plane look like?

Did it look like this?

[link to www.aimhigherjets.com]

or this?

[link to en.wikipedia.org]

There does appear to be alot of military movement lately across the US. Luke is home to F-16s. Nellis in NV is a training school house so they could be headed that way as well....

Good eye OP!

-D7