Downloads use AWS Requester Pays: you need AWS credentials and you pay the
data transfer cost (about $0.09/GB). Bucket:
s3://nemac-efetac-efs/. To fetch everything in this folder: aws s3 sync --request-payer requester s3://nemac-efetac-efs/fsdata1/fsdata/fdm/ ./fsdata1/fsdata/fdm