Getting back to the F-4 inlet design, I had one more thing to add. The F-4 is one of the last fighters not to have aerodynamic strakes located ahead of the wings on each side of the fuselage. This is why those large rectangular inlets seen on F-4s are not there on subsequent airplanes: strakes increase high angle of attack capability by energizing the boundary layer on the wings using small vortices that "hold the energy" before the flow gets to the wings. This in turn allows higher energy in the boundary layer and higher suction on the wings. Better flow adehesion means higher angles of attack and extra lift at low speed. Sounds fancy, but not really. After the F-4, inlets were almost always found underneath the wing to make room for the strakes.