Apropos Related Articles
This is another one of those cases where I find subtopics not quite right, and related topics not showing a strong enough relationship; it is a good argument for "co-topics".
The AH-64 and OH-58 attack/scout helicopters will work without the AN/APG-78, but they won't be as effective. The LONGBOW attack system wouldn't exist without it, but I haven't created a LONGBOW article, because I consider it adequately covered in other articles.
True, a Maverick missile with a LONGBOW seeker is useless without it, but Mavericks will work on the helicopters if a different guidance seeker is used.
"Co-topics" shows interdependency rather than hierarchy.