My trip to Colombia was OEF-CCA.I think you are right. OEF is strongly associated with Afghanistan but the term also became a bit of a catch all name for the GWOT as well. Some examples include OEF-HOA, OEF-Phillipines, OEF-Trans Sahara, and believe it or not OEF-Central America & Caribbean. I think the last one will be featured prominently in the upcoming series Narcos Grupo Siete.
https://comptroller.defense.gov/Por...udget_Contingency_Operations(Base_Budget).pdf