Completed first draft of Arjay's Reversal

I've finally finished the scene Arjay's Reversal, which I've been working on for Mission: Dawn. The scene feels contrived, but I've spent enough time on it and want to move on.

I've written enough content now for an entire chapter; however, there are a few gaps which I think need to be filled. For example,

1. In the scene Drawing Out Crenshaw, Morgan recognizes that Crenshaw isn't being himself and attempts to draw him out - I should probably write an earlier scene which introduces Crenshaw and demonstrates his unusual behavior.
2. Need a scene that shows the crew's attempts to locate Dr. Kellog Chapman. Need this scene as a setup to the conversation Arjay has with the admiral in the scene Dr. who?
3. Show Linda and Green coming aboard Dawn. (When we first see them, Linda is on Mars and Green is on Space Station; yet later they both appear on Dawn with no explanation given.)
4. I've been wanting to write a scene called The Briefing, in which Arjay briefs his senior crew on their upcoming mission. Perhaps I can address the above points in this scene - then I won't have to write too many transitions.

J says that I am unfocused and try to do "everything all at once". I can see why she would think that - even my previous blog posts show me going from one topic one day, to another topic the next day, from music to creative writing to real estate. Well, that is actually how I like to work - it must be ingrained in my personality. I like to pick something up, work on it for a while, then put it down and work on something else for a while.