As he was flying, how were you able to communicate with him telling him about his errant flying and your armament? What frequency was he monitoring?

Isn't brandishing a weapon a criminal act in Illinois unless it's an act of immediate self defense? I assume your sharp eye got the N#? You reported this incident?

 Your relatives were sprayed when almost 1/4 mi. from the field?

Finally....I personally don't believe your story. Or perhaps you just made it in jest.