It's not lying. People are being called to perform highly valuable full time work without any pay. This work is involuntary, because regular employees would be terminated and lose competitive status (adverse government action), and Coast Guard employees (who are paid by DHS not DoD) would face UCMJ charges for not working involuntarily without pay.
> This work is involuntary, because regular employees would be terminated
Being fired for not doing your job is not evidence of slavery. It's just called "normal."
Furthermore, I'm going to assume that you know the difference between "without pay" and deferred pay. If you know the difference and still choose to blur the lines intentionally I can only assume that you are lying as well.