He is living in his past make-believe world again.
Almost anyone who enjoyed listening to the stories of older relatives will remember the stories about hooking up some sort of DC device [usually called a "Shocking Machine" by the bad kids who played with them] to someone's old iron bedstead ... and then you had to turn a hand crank to generate enough electricity to shock someone ...
I never heard of anyone being electrocuted by one of these childish pranks. LOL
I read somewhere that this could NOT be done because of amps or volts or something. I know the WWII phones used a hand crank generator. But I don't know if it was amped.
Kerry served in the Military? I didn't know.