Zachary Wick is a US Army veteran from Operation Enduring Freedom, where he's worked in a variety of fields including mechanics and communication. He's been writing research papers since 2003. He discovered the 9/11 conspiracy theories from links from a friend and took an immediate interest after seeing the effects of the event itself and the disregard for the consideration of those affected directly. He wrote "WTC CD?" because no concise source outlines the often overlooked facts about explosives when the controlled demolition hypothesis is brought forth.