There is a lot of money being put into facial recognition software by law enforcement and the military (including DARPA), so it's certainly the case that it's b

There is a lot of money being put into facial recognition software by law enforcement and the military (including DARPA), so it's certainly the case that it's being worked on. But it's a hard problem, especially to do robustly at a large scale. What they do have is almost certainly the state of the art— in fact much of the current commercial state-of-the-art is itself based on stuff developed in older DARPA projects.