On 2018-05-08 12:05:20 +0000, Paul McGrane said:
> On 5/7/2018 5:14 PM, David Moorman wrote:
>> On 2018-05-07 11:51:13 +0000, Paul McGrane said:
>>
>>> My collection.
>>>
>>> <image>
>>
>> With those markings, it must be relatively close to an airfield.
>
> I didn't know that David :-)
>
> Paul
Just a guess on my part. They make it more visible to aviators.
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