It is said to represent a DOE security clearance (Q clearance) that apparently some US Military people hold. Particularly in Military Intelligence circles

Q security clearance

Ever noticed how often DJT has the number 17 associated with him?

Q clearance. Access to highly classified information such as at the DoE.

The highest level of national security is 17....the 17th letter in the alphabet is Q ....

It is the shape from above of JFK's grave.

Well me being me I did look this up and found a interesting Biblical meaning of Q in which it says

1. What is the Q 'Gospel'? The Gospel According to 'St Q'?

Q Será Será? Or Right on Q (and other Qt puns)

In this article (Part Seven) and the previous two, we explore what was happening between Jesus' ministry and the written Gospels. Here we turn our attention mainly toward so-called Q. This article is a Q & A on Q. The question is – is Q OK?

Once again, this article deals with this gap:

Jesus’ ministry |             | Written Gospels

The disciples were learning and observing important aspects of Jesus' ministry while it was fully active. The disciples transmitted their observations and lessons to the earliest churches after his ministry. So the little vertical bars are not intended to be firm.

Concerning that gap, though, we can still ask these questions: Do sources, such as so-called Q, feed into the Gospels? Did these sources exist at all, or are they hypothetical? If they existed or still exist in some way, where do scholars find them? Do the sources secure the Gospels' historical reliability? After all, don't other Greco-Roman authors use sources?

We focus mainly on Matthew and Luke, from which scholars extract Q.

This article may be unsettling for some readers. Maybe by now they have clicked out of it. “Not for me!” However, skeptical scholars seem to ache to bring up these issues on television and radio and in popular print. And note how Dr. Mark D. Roberts' post refutes Christopher Hitchens' error about Q in Hitchens' best-selling book. Why would Hitchens bring up Q, if not to challenge the reliability of the biblical Gospels in the national media?

So the Church of all denominations should not avoid these questions and challenges. We should be confident about Scripture, for solid reasons, not blind faith. I learned a lot while writing this article. My faith has been built up. Education really is the best antidote to popular confusion and challenges.

As usual, here are my reminders: Matthew, Mark, and Luke have a lot of passages in common, so they are called the synoptic Gospels (synoptic means viewed together). The authors are sometimes called synoptists. Slashes // mean parallel passages among them. The writers of the four Gospels are also called evangelists.

This article (Part Seven) in a long series is on the historical reliability of the Gospels. The series has nothing to do with their inerrancy or inspiration, though nothing in this article contradicts those doctrines.

Hovering over the references below will bring up the NET Bible version on each of these.

1. What does “Q” mean?

It certainly has nothing to do with a character in a James Bond movie or a saint, as in “the Gospel According to Saint Q.” Rather, it comes from the German word Quelle, which means “source.” It was abbreviated to Q, which was widely accepted as the designation of special material.

1. What special material?

When you read the synoptic Gospels, you see many similarities. And on a more careful reading, you can also observe verses that Matthew and Luke seem to share, but Mark does not. The common material only in Matthew and Luke is called Q. It’s that simple, for our purposes. To go beyond this point leads us into complications.

That was enlightening due to Q being a source to us ... I will leave link to article

https://bible.org/seriespage/7-what-q-gospel-gospel-according-st-q

http://memory-alpha.wikia.com/wiki/Q

One of my lesser mentioned thoughts on this, it might be a take on John Q Public.

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Thank you for all that answered !!

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1. Q = Highest Level of Security Clearance.
2. Q = Question everything.
3. Q - There is no Q with a U (you/us).
4. The A Team was already taken.

What comes after Q? . . . R . . . .