Possible drone work on 225.625 ongoing @ 2017Z 07MAY19, references made of these things;
https://en.wikipedia.org/wiki/General_Atomics_MQ-9_ReaperMentions of good old Indiana, Terre Haute (about 50 miles north of me), and tracks and etc and so on and so forth.
"tell them you are 20 miles east of Evansville" (Evansville 60 miles south)
"Come up to 377.12." (377.12 is Camp Atterbury MOA)
"Afirm in the climb two six zero."
"They probably terminated it once we got into the restricted area"
"They probably didn't like the delay" (this I think gives it away as drone operators as there's a delay involved when a drone is in direct contact with civilian flight operations yet the drone operator communications is delayed due the satellite link to the drone)
"About 3700 pounds of everything"
"Showing 27 knots out of the southwest"
Another giveaway is there will be no mask noise or jet sound in the background since the audio is generated by uav pilots in a comfy air conditioned and finely appointed ground control station. The drone simply relays the comms between the local flight controllers the drone is in range of, and the remote pilot.