Defense & National SecurityAerospace and defense communications agencies navigate corporate reputation, public affairs, investor relations, and government relations. The U.S. defense industry, new space companies, and commercial aerospace face unique communication challenges. This article outlines the leading firms for 2026, including Edelman, APCO, FleishmanHillard, Brunswick Group, FTI Consulting, Burson, Bluetext, Sard Verbinnen & Co., ICR, Joele Frank, Wilkinson Brimmer Katcher, Padilla, Levick, Beehive Strategic Communication, INK Communications Co., Rasky Partners, and Standing Partnership. These firms offer expertise in areas such as boardroom-level corporate reputation, capital markets work, crisis management, M&A communications, and B2G campaigns. The rise of new-space and defense-tech challengers is shaping new communication playbooks.