Flying the Saltire

[Southern Breeze]

Here's an interesting question:

Would the Saltire beflown below or level with the Union Flag? If below, would it fly level with the US flag or below it but equal with state flags? I ask because US states and the countries of the UK seem to be in analagous positions, dependent, subordinate, and discrete political units.

Anyone know?

You need to fly only one at a time. Otherwise you're guilty of showing a double standerd in public.