Apple CEO Tim Cook pays surprise visit to Orlando teen computer whiz

Apple CEO Tim Cook surprises Liam Rosenfeld, 16, a sophomore at Lyman High School, during a visit to the Apple Store at the Mall at Millenia, on Tuesday, May 7, 2019. Cook gave Rosenfeld a ticket and scholarship to attend Apple’s annual Worldwide Developers Conference in Silicon Valley next month. (Ricardo Ramirez Buxeda/Orlando Sentinel/TNS)

Liam Rosenfeld could tell something was up. 

As the 16-year-old walked into the Mall at Millenia's Apple Store recently, he saw a swarm of employees and customers buzzing around a kiosk.