A nonprofit watchdog, American Oversight, requested the order. A government attorney said the administration already was taking steps to collect and save the messages.

On the chat, Hegseth provided the exact timings of warplane launches and when bombs would drop before the attacks against Yemen’s Houthis began earlier this month. Hegseth laid out when a “strike window” would open, where a “target terrorist” was located and when weapons and aircraft would be used.

The images of the text chain posted by The Atlantic show that the messages were set to disappear in one week.