SSIS Package Best Practice for SQL Server Passwords

So right now I am providing my SQL Server Password via a Variable. This is surely NOT going to fly with our DBA...having a Password readily available via a SSIS Package Variable and ultimately within the XML.

So what is the Best Practice for providing a Service Account Password to a SSIS Package .dtsx for SQL Server Access and the OLE DB Connection Manager for SQL Server and then ultimately scheduling this SSIS Package to run via a SQL Server Job.

Trying to provide all the entities to give you a feel to where we're going with on this.

Thanks for your review and am hopeful for a reply.