Zephyr is an aeronautics firm with access to particular bits of information connecting with the F-302 fighter-interceptor project. This firm may have had ties to Colson Industries prior to its bankruptcy.
When Bryce Ferguson went on disability, Zephyr hired him as a consultant. It was through this firm that Ferguson gained information about leads possibly relating to top-secret projects, such as the rumored creation of interstellar battle cruisers. (SG1: "Stronghold")