Prime
- Aerojet Rocketdyne
- BAE Sys. Land & Armaments
- Boeing
- Curtis Wright
- General Electric
- Goodrich
- Honeywell
- Messier Dowty
- Northrop Grumman
- Parker Hannifin
- Pratt & Whitney / Raytheon
- Pratt & Whitney Canada / Raytheon
- Rolls-Royce
- Sikorsky
- SPOP
- UTC Aerospace Sys. - Collins Aerospace
- Various
Processes















