{ "NATDevice" : {
    "Type" : "AWS::EC2::Instance",
    "Properties" : {
      "InstanceType" : "t1.micro",
      "KeyName" : { "Ref" : "KeyName" },
      "SubnetId" : { "Ref" : "PublicASubnet" },
      "SourceDestCheck" : "false",
      "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMINAT", { "Ref" : "AWS::Region" }, "64" ]},
      "SecurityGroupIds" : [{ "Ref" : "NATSG" }]
    }
  }
}