[ProtectOurFreedom]

Sheesh, guys...I was showing a kinder, more gentle three-tier defense system. Of course, I didn’t disclose all the secrets in my design. Need to hold some surprises back. Unfortunately, it’s hard to keep alligators or piranha alive in the moat over the long haul, so that had to be shelved.

[Karma_Sherab]

it’s hard to keep alligators or piranha alive in the moat over the long haul

I don't know. They way they keep crossing the border, the problem may end up being that the gators get too fat to move.
at least at the start