Boeing-Sikorsky SB-1 DEFIANT | Thai Military and Asian Region
Boeing-Sikorsky SB>1 DEFIANT - Army Technology
U.S. Army Selects Bell and Sikorsky/Boeing to Build Prototypes for Next Generation Helicopter Program - USNI News
Bypassing competitors. New success for the Sikorsky-Boeing SB-1 Defiant
Faried Pierkhan - SB-1 Defiant helicopter set for take-off The Sikorsky-Boeing SB-1 Defiant prototype, in competition with the Bell V-280 Valor to replace the U.S. Army's UH-60 Black Hawk and AH-64 Apache
Future Vertical Lift : SB-1 Defiant or V-280 Valor ? NEXT GEN Helicopter! - YouTube