After looking at the job descriptions of AF Helicopter FEs, there is some mention of "general maintenance" but I'm not convinced it is enough to qualify for challenging the A&P! Perhaps there are some who have succeeded in convincing the FAA.
https://apps.dtic.mil/dtic/tr/fulltext/u2/a293408.pdf

It's basically a job that was created for the mission but the helicopter can be operated without an engineer, unlike airplanes with flight engineer stations ie: DC 10, B727, B747CL, Lockheed 382, etc.