What are those things?

There is not sufficient material here to produce a meaningful professional aviation analysis. The submission consists of a Reddit post title — "What are those things?" — and a link to an image that cannot be accessed or viewed, with no article text, no descriptive content, and no additional research context provided.

A credible analytical summary requires identifiable facts: a named subject, a described event or development, sourced claims, and enough context to draw informed conclusions relevant to working pilots and aviation operators. None of those elements are present here.

If you can provide the actual article text, a description of what the image shows, or a named source with substantive content, a full analysis can be produced from that material.