COWAC curated content on Blast Overpressure Science & Legislation

By Timothy J. Grossman, President

Covering August 21–28, 2026

This week at a glance: 

It was a quiet week for new science, but a notable one for oversight and advocacy. The dominant story remains a GAO report (released Aug 18, still driving coverage through this week) finding DoD cannot fully meet its own 2024 blast-overpressure brain-health monitoring requirements — citing staffing and industrial-hygienist shortages, with screening completion rates as low as 59% in the Navy. Separately, veteran advocates (SOAA) pushed this week to fold “suppressor blowback” toxic-gas exposure into existing congressionally mandated blast overpressure research and acquisition policy, tying it to the $5M blast overpressure mitigation device pilot in the House FY2027 NDAA directly relevant to the suppressor-procurement provision COWAC has been tracking skeptically.

No new movement was found this week on H.R. 9237 or BOAA 2026.

Science & Research

New clinical-data study finds blast-exposed veterans 22% more likely to show anger, aggression, or violence in medical records.
VA Salt Lake City/University of Utah researchers used an LLM to analyze notes from 10,000 veterans (5,000 high-risk blast MOS vs. 5,000 lower-risk), finding 17.2% vs. 12% documented rates, persisting after controlling for combat exposure, PTSD, and TBI. Published Aug 12 in Military Medicine (“When the Fuse Is Lit”); still circulating in this week’s coverage.
military.com coverage · journal listing (Military Medicine)

GAO report documents where DoD’s brain-health screening program is falling short.
Cognitive-assessment completion for high-risk personnel: Army 87%, Air Force 81%, Navy just 59%; officials cite a shortage of industrial hygienists as the “primary barrier” to exposure tracking. Report GAO-26-107829, published Aug 18.
GAO-26-107829 · Military Times coverage

No other new peer-reviewed studies or DoD/VA research releases specific to this window were identified.

Legislation & Policy

GAO recommends DoD complete a full resource assessment for blast-exposure monitoring; DoD concurs.
The two recommendations (cognitive-assessment staffing/tech, and industrial-hygiene staffing for exposure tracking) responded to a 2024 bipartisan Senate request (Warren, Collins, King, others). DoD’s Keith Bass said a resource assessment is due by December 2026.
GAO-26-107829 · Stars and Stripes coverage

Suppressor “blowback” toxic-exposure concerns pushed into the blast overpressure policy conversation.
SOAA (chief Ryan Ziegler) is lobbying to fold suppressor blowback linked to hydrogen cyanide/ammonia exposure, decreased sperm motility, sleep disorders, and Parkinsonism into existing blast overpressure research and acquisition mandates rather than treating it separately.

This lobbying effort directly touches the House FY2027 NDAA’s $5M blast overpressure mitigation device pilot and VA Blast Overpressure Task Force provision (Senate version still pending). Suppressor makers HUXWRX and Sig Sauer are marketing blowback-reduction designs into this debate. This is worth watching as a possible procurement angle. Published Aug 25.
Military Times, Aug 25