Very often you have to look at Military applications and ask if this is the commercial / domestic part of the industry trying to apply the science to make a buck (recoup R&D costs).
If you're in an aircraft under attack, time is everything. Conventional systems tell you you are under attack, but you then need to analyse data to determine from what direction, by which time you've a missile up your ****. In the late 90s 3D audio helmets were introduced so that the audio warning wasn't simply presented in two channel mono in the helmet, but in 3D so the pilot's brain would immediately know where the attack was coming from. ******* clever stuff.
Sometimes the marketing works (e.g. LCD screens), sometimes not.