Hey, im sorry for the ask but where does it states that those scenes were before the launching and not like... just showing a special cadet a fucking nice rocket and all? (As for Matt, just to have pictures of him in the garrison) /sorry, i dont really know this kind of stuff
Pidge was there with Matt because he was leaving for Kerberos soon. That’s why he gives her the glasses, promises to come back soon, takes the commemorative photos, and so on. This also explains why Shiro is there–he’s the third person on the Kerberos crew.
I’m also pretty sure that’s their shuttle docked in the background there. Which is part of why I also think Shiro is thinking back to this same launch and his parting with Keith in the second episode. You can see that rocket still in the background there. So logically, it’d be near the mission launch. But also from a thematic standpoint, it’s just natural to conclude that Keith was thinking of the same event as Pidge since both his memory and the photo were drawn with the same background–the launch for Kerberos. In Pidge’s flashback, we also see Shiro kind of leading Keith around and pointing things out–makes sense if he’s giving him a tour of the launch site.
Anyway, this also gives us a reason to include Keith in the scene as well. It’s understandable they’d let the astronauts be with their closest loved ones before the launch. That’s something they actually do at places like NASA too. But, if Shiro’s backstory is what I think, and he’s estranged from his family, it’s very possibly he had no relatives to bring with him. So perhaps as an exception the garrison would allow Shiro to take Keith to the launch instead. You know, that way he’d have someone he really cared about to see him off. It’s…really sad, but also bittersweet in that, no matter what, at least he still had Keith. And that was the last person he wanted to see.