I have to agree that (unfortunately) the positioning of the wall and ceiling means Kirk can't really be anywhere EXCEPT the main engineering level. So, like Blssdwlf I was mulling over the reasons why Kirk might want to go down/up/down and I came up with a scenario where Kirk is simply trying to find a quiet spot to break the bad news to Decker. 1) Kirk arrives at the upper level and peers over the railing. He spots Decker and takes the starboard-fore lift down to the main level. 2) Something (or someone!) catches his eye on the lower level and he pauses to gaze over the railing for moment. He then realises that in the meantime Decker has taken the port-aft lift to the upper level! 3) Since the upper level is a nice quiet spot to speak privately to Decker, Kirk takes the starboard-fore lift up to join him. However, Decker was only up there to collect a report from an underling and has now rejoined Scotty on the main level. Kirk sees this shortly after stepping off the lift and moving to the railing. 4) This puts Kirk's back up a bit - Decker couldn't possibly be avoiding him on purpose, could he? Kirk walks smartly to the port-aft lift and rides it down, no doubt cursing the absurdly slow speed of the lifts and wondering if a ladder could be fitted somewhere instead. 5) Kirk does not take his eye off Decker this time until he finally gets to speak to him. It's a bit of an absurd scenario, but then it's an absurd camera shot too. However, it might explain Kirk's extra abruptness when dealing with Decker, whose cheery attitude would merely fuel suspicions in Kirk's mind that the young captain was leading him a merry dance on purpose. Kirk's terse "let's talk" before leading Decker over the FOYER of all places to publicly demote him would naturally follow; Kirk would have preferred somewhere private to do this, but he's wasted enough time chasing Decker around Engineering already! What I meant was that Kirk came into the upper level using the little lift from the level ABOVE that, the upper-upper level, if you will It actually looks more like a "3" to me - is is this just a typo, as you described the medical students crossing through "section 2" to "section 3" later in your post? Having "bays" be more like "sections" solves quite a few issues, although it is a lot of sections for such a small area! I wondered myself if Bay 4 might be the aft launcher, and since the "photon exhaust port" is never explicitly called out as such on screen, it makes a perfectly fine launcher IMO. A lovely pic - and very informative too! Those wall sections look like the smaller type (approx 4' wide) so it reduces the overall length of the extended corridor considerably!