Where are the Help Desk Ultimate default email templates located?

Where are the Help Desk Ultimate default email templates located?

Files for the Help Desk Ultimate default email templates are stored in: app/locale/en_US/template/email/helpdeskultimate/

 If you want to customize email templates which get sent to admins and customers, you should not modify files, but navigate to the System > Transactional Emails backend section and alter templates there.