Thoughts on the DOJ issuing subpoenas to NYT reporters over the Air Force One story?

The administration recently sent federal agents to the homes of NYT journalists to compel them to reveal their sources regarding the Air Force One story.

In your opinion, is this an appropriate use of DOJ power to stop national security leaks, or does it cross a line regarding press freedom?

https://www.cbsnews.com/news/trump-air-force-one-security-subpoena-journalists/