Alaska Airlines yasankha John Wiitala kukhala Wachiwiri kwa Purezidenti wawo watsopano wa Maintenance and Engineering. Paudindo wofunikirawu, Wiitala aziyang'anira gulu lodzipereka kuti likhazikitse miyezo yapamwamba kwambiri yachitetezo ndi kutsata kwa ndege zopitilira 237 za Boeing m'malo osiyanasiyana okonza.
Wiitala amabweretsa naye zaka 34 zakuchitikira ku United Airlines, kumene posachedwapa adakhala Wachiwiri kwa Purezidenti ndi Chief Engineer of Technical Operations, Safety, and Compliance, akuyang'anira zombo za United States.
M'mbuyomu, adakhala ndi udindo wa Wachiwiri kwa Purezidenti wa Technical Services. Pa Alaska Airlines, ntchito zake zidzaphatikizapo ntchito zokonza mizere, kusamalira ma airframe, zigawo, ndi injini, komanso masitolo ndi kugawa, kutsimikizira kuti ali ndi khalidwe labwino, kukonzekera kukonza, uinjiniya ndi kudalirika, ndi ntchito zamagalimoto.