How can I reset an iPad that is stuck verifying an update?

Episode 1266 (16:29)

Burt from California
Apple iPad Air 2

Burt plugged in his iPad to update it and it has been verifying the update for hours and can't be opened. Leo says the update probably failed and he can do a hard reset. Burt should press the on/off switch and the home button together and hold it down. Then it will boot up and load the current OS. Then he can try again.