Those internal weapon bays are great for minimizing radar signature but also detract from internal fuel space. Drag is a secondary concern compared to fuel capa

Those internal weapon bays are great for minimizing radar signature but also detract from internal fuel space. Drag is a secondary concern compared to fuel capacity. AF has public fact sheets on F-15 and F-35 ranges (3400 vs 1200 respectively). It’s trivial google search. The Navy and Marine version have worse ranges because of their mission profile.