Under an Ionized Sky: From Chemtrails to Space Fence Lockdown by Elana Freeland is a 2018 non-fiction book that explores the intersection of geoengineering, military technology, and the alleged surveillance of humanity. It serves as a sequel to her previous work, Chemtrails, HAARP, and the Full Spectrum Dominance of Planet Earth. Freeland’s work is characterized as alternative science and geopolitical speculation, appealing to skeptics of mainstream climate and technology narratives. It urges readers to be aware of the "weaponization" of the environment.