Stennis welcomes Aerojet Rocketdyne to MississippiCourtney CarterJuly 11, 2016January 11, 2017 by Courtney CarterJuly 11, 2016January 11, 2017 FARNBOROUGH, England, July 11, 2016 – Aerojet Rocketdyne, a subsidiary of Aerojet Rocketdyne Holdings, Inc., announced that assembly and testing of its AR1 advanced liquid...