Question: Cal Jet is headquartered where? 
Sentence (from "SuperJet International"): SuperJet International (SJI) is a joint venture between Leonardo-Finmeccanica (formerly Alenia Aermacchi) and Sukhoi Holding established to sell the Sukhoi Superjet 100 (SSJ100), a 100-seats new generation regional jet with digital fly-by-wire flight control systems, and its business variant Sukhoi Business Jet (SBJ).
Relevant evidence: No