Since 9/11, four times as many U.S. service members and veterans have died by suicide than have been killed in combat, according to a new report. The research, compiled by the Costs of War Project at Brown University, found an estimated 30,177 active duty personnel and veterans who have served in the military since 9/11 have died by suicide, compared with 7,057 killed in post 9/11 military operations. The figures include all service members, not just those who served in combat during that time. The majority of the deaths are among veterans who account for an estimated 22,261 of the suicides during that period. "The trend is deeply alarming," the report says. "The increasing rates of suicide for both veterans and active duty personnel are outpacing those of the general population, marking a significant shift." The Department of Veterans Affairs releases information on deaths by suicide, but it does not distinguish by conflict. The report's author, Thomas "Ben" Suitt III, took the VA data and estimated the total number of veteran suicides based on their ages and other factors. A total of 5,116 active duty service members have died by suicide since Sept. 11, 2001, the report says. Figures for the National Guard and Reserves are not available for the first 10 years, but from 2011 to 2020 an estimated 1,193 National Guard and 1,607 Reservists have died by suicide. In an interview, Suitt said the number 30,177 is likely well below the actual number of suicides for active duty and veterans.