Do carriers such as Janet Airlines carry ADS-B transponders? I was doing some casual browsing and came across some videos related to Janet Airlines. This is something I remember hearing of many years ago but this happened to jog my memory.

What jurisdiction would such an airline fall under? From the Wikipedia article:


  Due to the secretive nature of the airline, little is known about its organization. It is operated for the USAF by infrastructure and defense contractor AECOM through AECOM's acquisition in 2014 of URS Corporation, which acquired EG&amp;G Technical Services in 2002, as derived from URS's history of providing this service to the Air Force and job openings published by URS.


If it's strictly military (all staff appear to require clearances, after all), would such planes be fitted with ADS-B transponders by regulation? If so, couldn't they just be looked up on websites like Flightradar24?

Also, if an emergency occurred on board, what special treatment (if any) would they be provided if they landed at a civilian airport?
You can just look them up. Here's a screenshot from Flightradar24 taken at about 1410 UTC on 22 May 2017.

I imagine in an emergency they'd be given priority just like any other aircraft in distress. The crew might have specific orders covering that situation that requires them to head for a military base. Their operation is so secret, though, that I doubt we'd find out unless a emergency occurs.