The charging papers don't explain what those work-related expenses entail, nor do they identify Rush as having worked for the CIA. It was the New York Times that reported Rush's CIA background. Presumably, the gold was intended to be used for a covert operation.

The charging papers do say that the gold went missing from the government storage space where it was supposed to have been held. Agents allegedly found it at Rush's home when executing a search warrant on May 18.