The Defense Advanced Research Projects Agency (DARPA) Tactical Technology Office (TTO) is sponsoring an in-person Industry Day in support of the DARPA Program Solicitation (PS) for Deep Thoughts on February 6, 2026, in the DARPA Conference Center (DCC), located at 675 N Randolph St, Arlington, VA, 22203 from 8:30 a.m. to 3:30 p.m. ET. DARPA has released a CUI Technical Attachment, which may be requested through this link by those organizations with the ability to handle CUI. Requests must be made no later than 4:00 p.m. ET on February 4, 2026.