The Department of Defense said more service members reported sexual assaults in fiscal year 2019 than 2018 but acknowledged no survey was conducted this year to understand the rate of incidents that go unreported.

“Addressing sexual assault is really one of the most challenging topics that we face in the military, but it’s so critical that we get this right,” Dr. Nate Galbreath, acting director of the Defense Department’s Sexual Assault Prevention and Response Office, told Pentagon reporters Thursday.