This issue of the HDIAC Journal looks at how Special Operations Forces use the latest technological innovations to increase warfighter effectiveness. Then the Journal explores research to mitigate and decontaminate urban, wide-area radiological contamination. Next, researchers discuss poor performance in unfamiliar face recognition. In addition, scientists look at social media’s impact on operations in megacities. Finally, the Journal features a hemostatic foam with potential to increase successful treatment and transport of soldiers injured on the battlefield. This issue also highlights three of HDIAC’s technical inquiries. HDIAC received a questions relating to water purification methods to support deployed troops; safety culture assessments and incident rates in the U.S. pipeline industry; and Department of Defense applications for CS-GAG hydrogels.