It's just our engineer kinda not used to thing called security clearance. Probably think he can just stick his USB, save some files and stidy it home for work tomorrow.
Admitedly tho we're kinda lax in regard of IP protection and thus why US demanded us to create some form of agency or institution to safeguard transferred IP to not leak. South Korea did this, but for some reason we were unable to do such.
Oh for those wondering about the Indonesian engineers, they’ve been released months ago.
It was material within clearance, but they had to ask permission to bring home.