If you're not familiar with Charles Grassley, you may look at him and the way he handles the Kavanaugh hearings and think, "Is this dude from another era?"
Yes he is! When Grassley was first elected to the Senate, RAYGUN founder, Mike Draper, was not even born.
Since that election, Mike Draper has been born, grown up, gone to college, started RAYGUN, gotten married, grown RAYGUN, and had 4 kids (the oldest of which is 10).
Charles Grassley, meanwhile, has gotten crankier.