[cbd1984]

> The key is that they allow for decentralized, secure comms at the speed of light.

Until someone sends in a drone with a radio-seeking attachment on it and a few hundred pounds of high explosives strapped to its ass. It's hardly infrastructure-free when the infrastructure it relies on has just been blown to Hell.

[hessenwolf]

The sentry gun is always going to re-aim faster, because it does not have to travel along as large a circumference to be at a different angle.

[gambiting]

But antennas are neither difficult nor expensive to make. If it's destroyed another one can be erected within a day.