Expires headers

How come there’s no expires header on this element?

https://ajax.cloudflare.com/cdn-cgi/scripts/7089c43e/cloudflare-static/rocket-loader.min.js

It’s picked up by YSlow page speed test through GTMetrix.

Looks like 48 hours to me.

EDIT: Sorry, I drew over the next header (cache-control) that shows 48 hours worth of seconds as well.

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