Small Diameter Bomb II Fit Check On JSF Completed

Small Diameter Bomb II Fit Check On JSF Completed: USAF, Raytheon Test Shows SDB II Is Compatible With F-35 A fit check of the GBU-53/B Small Diameter Bomb II on the F-35 Joint Strike Fighter aircraft has been successfully completed by the USAF and Raytheon Company. During the test, four SDB II shapes were loaded into an F-35 weapon bay alongside an Advanced Medium Range Air-to-Air Missile. Sweeps of the inboard and outboard bay doors verified there was adequate clearance between the two weapons.