Currently users are able to select their preferred AWS Region from Elastic Bamboo 'Configuration'
The default images within the Bamboo documentation are only available from US East (Northern Virginia).

Current:
Login to AWS console
Find the Community AMI (these cannot be copied across regions)
Create an AMI based on the community AMI
Copy across to the desired region

Improved:
The default Community AMI's are made available for all regions

The Affects Version for OnDemand does not allow the correct version to be added: 5.0.2-OD-2