Jens Greiner holds a university degree in management and economics (Diplom-Kaufmann) and is a freelance consultant with focus on security-, crisis-, and stakeholder management. He studied economics and organisation sciences at the University of the German armed forces (Bundeswehr) in Munich focussing on international management. As a military officer he held various leading positions, e.g. as company commander, and instructor roles. In addition, he is specialised as a military target group analyst in providing advice on analysis of psychological approaches and communication strategies in the context of target group management. Mr. Greiner advises and supports different crisis teams mainly of international companies. In support of (re-)action capabilities of the crisis management systems he particularly deals also with the core elements of robust information and communication activities.