Right now, the gaps we are addressing with NORAD modernization are focused a lot on the radar systems that we've been speaking of. As mentioned, the north warning system does provide a certain coverage, and the Arctic over-the-horizon radar will fill in a very wide swath in addition to that. There will also be more ability from the space side to be able to detect.
As to fighter capability, as a fifth-generation fighter, the F-35 provides lethality and survivability against the known threats that are being developed by adversaries; therefore, the gaps that would be created would simply be related to the technology that adversaries are developing that we would not have at hand.
