I'm deciding to either attend Air Assault School or EFMB; which would you choose and why? (Currently in Korea)

EFMB is done every year and as a medic you are expected to compete. AA might not always be available to you. Why limit yourself to one or the other? Do AA and next year do EFMB.

Go with your MOS training you can do Air Assault anytime.

I advise you to attend schools that are related to your MOS. I could see that your a medic. Attend EFMB then Air Assault. I heard EFMB has one of the lowest graduation rates among army schools so don't be discouraged.

I would say that you need to look at two different things. First, are you doing this for promotion points. If that is the reason, the EFMB gets you 30 and the Air Assault only gets you 10. The Next question is where are you going when you return from Korea. If you are going to Fort Campbell, you will get Air Assault there. If you are going to an Armor Division, or something along those lines, then you may not have that opportunity when you get there. With that being said, if you are in Korea now, and they are offering you Air Assault, but you are going to an armor base, go ahead and do air assault. EFMB will be offered at EVERY base you go to, and many company commanders make it mandatory to attend the course until you get it. I know when I was at Fort Campbell, EFMB was help once a year by Division and once a year by MEDCOM. In the end, I would say that you should look at what you chances of being offered Air Assault again are.

Who are you assigned with in Korea?

Go Air Assault.
While EFMB is nice and all it isn't your CMB and that is all that matters. Also since you're actually a whiskey it's a slap in the face to attend EFMB and sit by while they teach outdated and poor skill sets. Land nav day and night is still applicable as is radio and the ruck march is still a good early morning ruck, as far as anything medically tested on EFMB lanes is why I can't take the badge seriously. Or give it any credit. "For EFMB testing purposes only" - hardly an expert then are you if we're using outdated information and protocols.

Go Air Assault, you'll be better for it.