Walt Janowski, RS-68 program manager at Aerojet Rocketdyne, discusses the RS-68A rocket engine program, goals for the May 10, 2017, test held at NASA’s John C. Stennis Space Center, Mississippi, engineering lessons learned, and what winemaking and rocket science have in common with Defense & Aerospace Report Editor Vago Muradian. The interview was conducted outside of the B Test Complex. The Defense & Aerospace Report’s Stennis coverage was sponsored by Aerojet Rocketdyne.