Casinos are notorious for having "eyes in the sky" but a national security agency in Marion is hoping to provide that level of security locally.

It's important to make sure you understand exactly whose security is improved using surveillance in the above two examples. The casino patrons are allowing their own invisibility to be reduced in the hopes that the more costly invincibility that the casino has for itself will spill over to the benefit of the patron, and that is frequently a decent trade-off. On the other hand, if the agency is compromising the citizens invisibility so it doesn't have to provide any invincibility, it's hard to imagine any of the citizen's benefiting from it.