https://nationalstocknumber.info/national-stock-number/6920-01-536-2238
"How is national stock number 6920-01-536-2238 categorized?
A pod used to collect and transmit information to the ground systems, to support real-time weapons simulations and displays. operates as part of the airborn subsystem of the air combat maneuvering range."
I got no knowledge of these things, but it looks to be a training pod.