Use Drone swarms outfitted like crop-dusters to spread obscurants over a localized battlespace to effect an engagement. US is working on "brown-out" vision systems to land rotorcraft, and these systems could be used by ground forces to see through a "brown-out" caused by obscurant scattering drones.
The US used to "own the night", now it can "own the environment".
Opponents would be completely blinded by the obscurants but US forces would be able to see through them. This could also be used against rioters.