All official NAVFAC logos and seals on this page can be downloaded from the NAVFAC Flickr photo set at the below link.
To download a photo:
1. Go to https://www.flickr.com/photos/navfac/albums/72157627315803197
2. Click on the photo
3. Click on the downward arrow icon in the bottom right corner
4. Click 'View all sizes'
5. Select and click the size you want to download