Ok...sorry for the confusion here. The code I asked about, is in the FSDBA schema. FSDBA is basically a DBA role with only a couple of exceptions, none pertain to this kind of scenario.
The code calls to another schema (fs_nris_fsveg) and calls those packages.
So FSDBA should have the ability to execute those packages in the other schema.
The packages have public execute granted. Which is how all the other users access that package.