1. Login to OWA: https://web.mail.mil.
2. Click "Options" in the upper right hand corner Click "See All Options".
3. Click "Groups".
4. Select the group(s) that you would like to leave and click "Leave".
Note: If you can't remove yourselves from the distro lists, click the "Details" button and it will provide you with the distro list owners. Reach out to them directly to be removed.