I still can't find it, even in the position you specified...
Also, I found another oddity, not related to the Beta3 modifications:
In "Embassy" the man who distracts most of the people in the staff lounge by playing the piano is one of Volkov's bodyguards, but he does not carry a gun and has civilian AI (ie. cowers at the first sign of trouble).
I've got two solutions to this:
1. Set the pianist's AI to that of an armed guard and give him a Colt 1911 with ammo.
2. Change his character model to another employee.