EDITOR’S NOTE:  This story contains discussion of suicide. Help is available if you or someone you know is struggling with suicidal thoughts or mental health matters. In the US, call or text 988 for help. The International Association for Suicide Prevention and Befrienders Worldwide have contact information for crisis centers around the world.

Eight US Navy personnel assigned to the USS Abraham Lincoln carrier strike group attempted suicide during a period that included when the ships undertook combat operations against Iran and the carrier set a modern record for its time at sea, according to a letter from the service’s acting secretary, which was obtained by CNN.

Acting Navy Secretary Hung Cao revealed the number, which has not been previously reported and covers crew members from several ships that travel together, including the carrier, in written responses to questions posed by Sen. Kirsten Gillibrand about the morale and mental health of the USS Abraham Lincoln’s crew. Cao wrote that no service members had killed themselves during the deployment.

The rate of suicide attempts among the Lincoln strike group’s sailors was roughly consistent with that of the entire active duty Navy in 2024, the most recent year for which the Pentagon has released suicide data. That year, the Navy saw 356 suicide attempts among its estimated 337,000 active duty sailors.

“Since the beginning of Lincoln’s deployment, there have been a total of eight suicide attempts across the strike group,” Cao wrote to Gillibrand, a Democrat and member of the Senate Armed Services, in a letter dated Tuesday.