Since apparently, KBS won't air The Unit on V Live anymore just after EP 1, here are other ways to watch tonight's episode (and for the future episodes as well of course):

(1) Stream from one of these links (find the links on the inline comment so it's easier to copy-paste them):

https://aqstream.com/kbs2/KBS2

http://aqstream.com/kbs2/KBS2-Stream-2

(2) Watch it from KBS's website by following these steps (note that this only works on computer, not available on mobile I don't think):

Step 1: Click on the external link provided for this part (or the one on the in-line comment).

Step 2: On the top left-hand side of the page, click on the On Air ∙ VOD. A drop box like this should appear.

Step 3: Click on the KBS2TV (the yellowish orange logo), and a pop-up like this should appear (sometimes it takes a minute or two to load btw).

Step 4: Press play on the video screen. (Note: Sometimes you might be asked to enable your Flash player first to be able to play it)

I really recommend the KBS one as (at least for me) it doesn't lag quite as often as on the AQ Stream (as so many people stream on that site already that's why it's probably slow).