 While working as a nuclear physicist for several companies from 1957 to 1978, Buck loaned partner and family friend Fred DeLuca $1,000 in 1965 and advised him to open a sandwich shop to help him pay for college at the University of Bridgeport in Bridgeport, Connecticut.They named the restaurant after Buck, calling it "Pete's Super Submarines".Together Buck and De Luca formed Doctor's Associates to oversee operations of the restaurants as the franchise expanded.