https://skift.com/2014/10/14/3-biggest-challenges-facing-the-global-aviation-industry/ (Transport, Airlines- 3 Biggest Challenges Facing the Global Aviation Industry Samantha Shankman, Skift- Oct 14, 2014 12:00 pm)
https://www.weforum.org/agenda/2016/07/four-threats-to-aviation-security-and-four-responses/ (Written by Anja Kaspersen, Former Head of Geopolitics and International Security, World Economic Forum)