Credit: https://twitter.com/Notmanipulated7/status/828851862141071360

I wasn't sure about the source (www.independentsentinel.com) so I searched for further confirmation. I found this link on Foxnews: http://www.foxnews.com/politics/2015/08/24/carson-flanks-trump-floats-drones-for-border-wars.html

Excerpts:

Carson first suggested last week, during a border tour in Arizona, that such efforts could eradicate border “caves” where smugglers hide illegal immigrants.

And

But Watts also repeatedly said Carson, a retired pediatric neurosurgeon, has never intended to use drones against people.

“After hearing what he heard, seeing what he saw, [Carson] believes that the American people will stand behind what he said,” Watts told FoxNews.com. “We have a security crisis on the border. This is not about illegal immigrants. We’re at war with hardened criminals, drug smugglers and human traffickers.”