Yeah saw this too this morning and was confused. Created an account here just to mention it because it looked so...interesting...
callsign: SWA505 | hex: AF3E27
Hex code isn't coming up anywhere I can find it...so no idea what kind of airframe.
ADS-B Exchange - track aircraft live - aircraft flight history
globe.adsbexchange.com
And at around the same time this C-32B Gatekeeper (FEST and other major incident response) was up in the air. It appeared to connect with a tanker over PA and then flew back home.
ADS-B Exchange - track aircraft live - aircraft flight history
globe.adsbexchange.com
This could all be a complete coincidence, but those paths look a lot like the interior perimeter/center of our most dense nuclear reactor cluster.
Map of Power Reactor Sites
Someone mentioned COG exercises...think this could a related exercise preparing for some sort of infrastructure threat?