I just wanted to say thank you to all and share my interview experience.
I passed the interview today in Yerevan, Armenia. Well, everything was smooth, but they requested for a photo copy of my passport and military record. So, just in case bring all the photo copies of original documents. After I passed the interview the guy gave me the original documents I have submitted and asked to bring my passport and military record back with photo copies and mentioned that they could do a copy themselves, but it will cost 1$ per page and it doesn't make sense to pay that much, since it costs about 2 cents in my country and he did't even ask if I agree or not to pay the price
He also mentioned that everything else is OK and that they will call me after the visa is ready to be picked up.
So I went out and came back within half an hour with the required copies and submitted for inclusion into my case.
Now in ceac my status is set to AP, hope it won't slow down the process.
Thanks!