Defense News parses this new,  totally surprising, threat:

“We need to be cognizant of the fact that nations elsewhere, and non-nation players, can easily develop unmanned systems themselves,” Chung said. “So that leaves us to think about the adversarial unmanned systems. We need to think not just about our unmanned system but the ones that want to attack us.”

One suggested solution is body armor, which should be fun for senators and DOD officials to wear all day in a globally warming world.