Hey deltabravo
I'm a few weeks in to my sobriety, and I get what you're saying about being scared. That's what I use to back away from that first drink. I am no longer a drinker, no apologies, no excuses. Tho my sobriety wasn't enforced and I have had to face it and deal with it, I used the fear, reflected on the reasons why I had to stop and took a deep breath, you can use the fear too.
Think strategy, something I imagine you'd be able to understand given your job. Imagine what you may face and how you can overcome it.
You
can do this....
What the others have said about a plan for when you get home is really important. There is a wealth of info here to help you re. recovery methods use one or use them all, remember whatever it takes to maintain your sobriety is the no. 1 concern.
wishing you well......