Well, if you want to avoid being audited I'd use a foreign address when filing a foreign earned income exclusion.
Well, errr, not necessarily, with all respect. I do the physical presence test and use my US address. Also, if you've moved back home but are filing for the previous year (foreign country), you'd use your current (US) address. If in fact your actual residence is in Sandland I'd certainly use that. Better yet, do what your tax advisor says. Even with TurboTax I had an accountant I could talk to - now with a more complicated situation I let the gal do the whole thing. TurboTax is great, but be careful.
And never take tax or other financial advice from pilots!!!