Proposed drawings of the border wall promised by President Donald Trump include plans for bombproof concrete, solar panels, and a fiber optic tunnel detection system. Contractors expressed concern about attacks during the construction process and received numerous death threats for bidding on the project.
Wall design proposal from DarkPulse Technology, located in Arizona. The proposal calls for tunnel intrusion detection and a ballistic wall capable of surviving a tank round. (Image via AP)

Wall design proposal from DarkPulse Technology, located in Arizona. The proposal calls for tunnel intrusion detection and a ballistic wall capable of surviving a tank round. (Image via AP)