A lightning strike may contain more than 1,000,000 volts and over 200,000 amperes. Lightning does strike twice, and more. The Empire State Building, for example, averages over 20 hits per year. Incidentally, it's outfitted with an L.P. system, so nothing happens.
Lightning can side flash, through air, for over a mile.
NASA is experimenting with triggered lightning. They are sending small rockets aloft, trailing copper wire, and measuring the lightning discharges that follow the wire to ground. Ben Franklin would have been proud.