Jack works for a cleared defense contractor. He recently purchased a large, expensive home well outside the price range of his salary. It is a significant upgrade from his previous home, and it is unclear how he was able to make such a large purchase. What should his coworkers do?

- Confront him directly. It is his coworkers' responsibility to determine if he poses a risk.
- Report it. Financial concerns are a potential risk indicator.
- Stay out of it. Jack's coworkers should not get involved in his personal matters.
- Follow him. Jack's coworkers should keep a close eye on him to determine if he displays other suspicious behavior.