I think it makes sense to keep an open mind, especially that small core of instances where phenomena are seen by multiple military personnel simultaneously - as has happened in the latest crop of released videos, but as also happened for example during Operation Mainbrace and the 1952 Washington flap. The "safe" option is probably just to ridicule it all, because no one will make fun of you for that, but it does strike me there's enough in the above category to warrant putting it in the "interesting" pile, without second guessing what's actually going on...