The JSON files in the S3 bucket can be downloaded in isolation from any other format and they're pretty small. I did some geo-enrichment of them in a previous blog post where I found the country and waters of Umbra's ship imagery. https://tech.marksblogg.com/yolo-umbra-sar-satellites-ship-d...

The above relies on network calls to OSM but with Capella, I found a way to get the smallest GeoFabrik partition for each image using a single GeoJSON file. The code could probably be modified to work on Umbra's feed with a bit of work. https://tech.marksblogg.com/capella-open-data-free-satellite...

Lastly, Umbra have ~24 locations they image frequently but there is an 'ad hoc' folder with a lot of subject names in English that give away the location and subject matter. This might be easier to look through for interesting imagery.

aws s3 --no-sign-request ls 's3://umbra-open-data-catalog/sar-data/tasks/ad hoc/' | grep -i 'tesla\|nvidia\|saudi'