Bachelor's degree in a related field, strong writing/editing/proofreading skills, ability to interview SMEs and distill technical content, manage multiple projects under deadlines, and willingness/eligibility to obtain Top Secret/SCI clearance.
Microsoft Word, Microsoft PowerPoint, Microsoft Excel, Microsoft Outlook, Microsoft SharePoint, Microsoft Visio, Microsoft Project, Adobe Acrobat Pro, Adobe Creative Suite, AP Style Guide, Chicago Manual of Style