licensed expert

At the age of 11, Lenz became the youngest licensed Expert racer in CCS (Championship Cup Series) history.

To avoid being swamped by calls from everyone who sees a nonexotic gull or a tern, the zoo issued a list of "bird rehabilitators," licensed experts in aiding wildlife, to serve as intermediaries.

At the age of 11, Lenz became the youngest licensed Expert racer in AFM (American Federation of Motorcyclists) history; the previous holder of that honor was American GP racer Randy Mamola.