Mission briefing is not generally held in a launch bay. It might happen if you have a rapidly changing situation and need to brief everyone right before takeoff, but this feels more like something planned well in advance. I have no idea if drawing a briefing room would be harder or easier, so feel free to ignore if it makes it harder on you.
Frame four suggests it is MEOW time.
Mission briefing is not generally held in a launch bay. It might happen if you have a rapidly changing situation and need to brief everyone right before takeoff, but this feels more like something planned well in advance. I have no idea if drawing a briefing room would be harder or easier, so feel free to ignore if it makes it harder on you.