Trump wants 15,000 more agents on the southern border. The border is 2,000 miles. That means there would be 18 agents for ever mile of border or an agent for every 290 feet. This seems like a big overkill when you consider the difficulty in crossing large portions of the border and the technology we have available today to detect and track intruders.
Well, to be fair, they have to sleep and only work (I assume) roughly 40 hours per week.
So, (yes, I am bored right now), there are 168 hours in a week. So assuming each border agent works 42 hours per week, that would mean 4 border agents per section of fence to cover it 24/7.
And I would hope they would have a partner (I do not know). One single, border agent trying to single-handedly stop illegal immigrants in their 'sector' seems a lot to ask.
So that leaves 8 border agents per section (assuming that zero agents were held back for processing and the like).
That would raise the length of border that each pair covers to 2,320 feet.
(all of the above is based on your estimates)
That is almost a half a mile.
That seems fair to me.
I understand your point...but I just could not resist a little quick math.