code: def _connect_to_ec2(region, credentials):
      
      conn = boto.ec2.connect_to_region(
          region,
          aws_access_key_id=credentials.access_key_id,
          aws_secret_access_key=credentials.secret_access_key
      )
      if conn:
          return conn
      else:
          log_red('Failure to authenticate to EC2.')
          return False
docs: :param region: The region of AWS to connect to.
      :param EC2Credentials credentials: The credentials to use to authenticate
          with EC2.
  
      :return: a connection object to AWS EC2