if they are indeed in the USA, which i dont see as confirmed because it could be any US military base,
i wonder why the russian soldiers are supposedly wearing us military uniforms and spalko is in her "normal" russian dominatrix uniform.
I dont think that a russian commander at that time could freely walk into an american military base in the USA and is not trying to cover up her real identity.
IMHO that base could be anywhere in the world and the soldiers are really american soldiers.
P.S. I know that we saw a box with Roswell NM on it