Fox Tail Industry Day

The Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office is hosting a collateral SECRET Industry Day on August 31, 2026, in Arlington, Virginia, to brief potential proposers on the Fox Tail program; advance registration closes August 24, 2026, at 5:00 p.m. Eastern Time or upon reaching the 100-person capacity limit. The Industry Day will run 8:00 a.m. to 4:00 p.m. ET and will not be webcast. Fox Tail targets extreme-scale hydrodynamics research, including high amplitude wave propagation, very high Reynolds number flows, and abrupt phase changes, seeking theoretical and computational modeling approaches based on first-principles closures of governing fluid motion laws. DARPA anticipates releasing the Fox Tail Program Solicitation in September 2026 as an Unclassified PS with a collateral SECRET addendum available on sam.gov.

Attendance is limited to three individuals per organization and two per division or department. All attendees must be U.S. citizens holding a final collateral SECRET DoD security clearance; clearance and visit requests must be submitted to Strategic Analysis, Inc. by August 24, 2026. Registration is available at https://events.sa-meetings.com/FoxTailIndustryDay/. Optional one-page Proposer Profile Lists supporting teaming facilitation are due to FoxTail@darpa.mil by September 3, 2026, at 5:00 p.m. ET. Lightning Talks—five-minute presentations—are available on a first-come, first-served basis with unclassified PDF slides due August 24, 2026. Attendance is voluntary and not required for proposal submission. Direct technical inquiries to Carlo Scalo, Program Manager, at FoxTail@darpa.mil.