Is the Spanish military supposed to be patrolling the borders here in the US.
Honest hypothetical there, are they?
The Spanish military patrols its own border with Morrocco, with paramilitary troops - the Guardia Civil (like the French Gendarmes).
I have lived and worked in the US for almost 40 years. I worked on (as a mechanical engineer, consulting on metrology) some of the weapons systems you seem to want to slaughter civilians with.
You are not being serious, or you seem hysterical. Calm down and think.