Now 73, Supica is retired from his career as a businessman in auto parts and repairs, relocating a few years ago to the more scenic Smokey Mountains town of Sevierville, Tenn.
" Zilke says auto technicians face components repairs "virtually unheard of a generation ago, " and need to be "master diagnosticians well-versed in electronics.
On Tuesday, Dzhokhar Tsarnaev came to an auto-body shop to pick up a Mercedes he had dropped off for repairs, said Gilberto Junior, who works at the shop.