sternfanatick,

Here is the link and verbage for OCSD, 

Link:  http://www.ocsd.org/

Text:

Polygraph Examination 
 
This process involves being connected to a polygraph (lie detector) while answering questions about such things as your application information, prior employment, possible alcohol and drug usage, gambling habits, economic condition, driving record, and possible criminal activities. During this session, the Polygraph Examiner will assess the truthfulness of your responses. The process will be completely explained to you before your test. The polygraph is given at the discretion of the Orange County Sheriff's Department. 


Key to note that it is at the discretion of the OCSD. What this truly means is, they may or may not polygraph everyone. Hope this helps, Much success to you in your job search.

Regards ...