China’s Ministry of State Security has warned passengers against opening window shades during take-off and landing at airports used by both civil and military aviation, a move that runs counter to prevailing practices regarding aviation safety. The warning, issued on WeChat Monday, was aimed at limiting the leak of sensitive military information through photos and videos taken by passengers during take-off or landing at dual-use airports, the South China Morning Post reported. [time-brightcove not-tgx=”true”] Read More: U.S.