HackerOne announced on Wednesday the results of “Hack the DTS,” the fifth bug bounty program run by the U.S. Department of Defense (DOD).

The DTS (Defense Travel System) is a fully integrated and automated travel management system created specially for the DOD. The platform is said to be accessed by roughly 100,000 unique users every day, including for creating authorizations, receiving approvals, preparing reservations, and generating travel vouchers.

The Pentagon wanted to test the security of the platform and selected 19 vetted hackers from HackerOne to complete the task.