The thing with Chinwe asking about Zeroing the rifle isn't normally just a military thing but it does indicate someone with prior weapons training. You need target practice to do so and I'm not really sure i'd be wasting ammo trying to Zero my rifle by some info in a book. Windage/elevation.. that's crap I still have problems with. I normally say fugg it and call it good as long as I'm hitting center mass. I can care less if my groupings are this or that close. 10 holes in a living person's chest is 10 holes they didn't have before. I'm starting to have flashbacks of Post briefings now (we had to do those when the flight chief showed up at our post. Sucked to go over the nomenclature every night)
Anyway, I digress... "Training" is what Chinwe has. A lot of people talk about her having a baton; the real thing is she knew how to use it, she knew how to defend herself and she had a pretty damn good rear naked choke on Saul. This chick is small enough to hide under a car after all. Training.
Not something you learn from a book.

2400 clock vs what ere'body else uses:
Europeans in 2400 clock speak as are most everyone BUT we Yanks (what else is new). Sky Tv advertises its shows with the 2400 hour clock. So, you'll see "Being Human" on BBC at 1700 friday.

Nik theorized that Kalani.. ah why paraphrase when I can cut and paste?

"Not sure if anyone posed this thought before and if you have stand up and take credit: What if Kalani was a maller, had next to nothing to do with the other tower, but when he was captured he stole Samantha's story decided to start anew at the Tower? I know that opens a cluster of conflicting information, but that might be a way for the story to go as well. I seem to only see people say he was only a maller or he was never a maller. What if it's a healthy combination of both?"

My answer:
That would totally disregard his story on Hawaii wouldn't it?
My guess is that the mallers started taking people after the "War". They lost a ton of people plus they wouldn't have tried to take the building with all the slaves. No room. Plus Durai was all Mr. Nice Guy.
They had to have given the mall the heave ho shortly after that and found another spot. Something larger and safe enough to plan, build, continue looting and capture survivors. Kalani was the last of a group prior to Sam being taken.
I think his relationship with them is far more.. was far more complex. The name drop at the end of the episode was a KC Juke!