The Commercial Spaceflight Federation said Jan. 8 that Boeing Co. and four other companies have joined the organization.

In addition to the Chicago-based aerospace giant, Paragon Space Development Corp. of Tucson, Ariz., joined the trade group as an executive member.

Joining as associate members are: Firestar Technologies of Mojave, Calif.; Golden Spike Co. of Boulder, Colo., and Spaceflight Services of Tukwila, Wash.