aws iam detach-role-policy --role-name AWSBoswell \
--policy-arn arn:aws:iam::aws:policy/PowerUserAccess
aws iam delete-role --role-name AWSBoswell
unset ROLE_ARN
unset PRINCIPAL_ARN
aws iam detach-role-policy --role-name AWSBoswell \
--policy-arn arn:aws:iam::aws:policy/PowerUserAccess
aws iam delete-role --role-name AWSBoswell
unset ROLE_ARN
unset PRINCIPAL_ARN