[cloudmountain]

The US needs a way to detect tunnels. Can ground penetrating radar do that?

From Google: Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. This nondestructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures. GPR can have applications in a variety of media, including rock, soil, ice, fresh water, pavements and structures. In the right conditions, practitioners can use GPR to detect subsurface objects, changes in material properties, and voids and cracks.

=======================

I BET someone will invent a tunnel-detector VERY soon.
Then, maybe they smugglers will use ocean vessels.

The kicker is to shut down the American DEMAND for drugs. But, knowing my own fellow Americans, that will never happen. Americans apparently NEED drugs to get through life.

They REALLY need Jesus, but they won't do that either. That requires self-sacrificing love. Drug users love only themselves.

[Falconspeed]

“They REALLY need Jesus.” True. Young people who are attracted to drugs need to imitate the sober, happy Americans:
1 church a week, 2 family vacations a year, 3 sports a week, 4 homework help from parents a week, 5 family dinners a week and always tell the truth at 12 am midnight to parents. Always. Then drugs go away.

[Blue Jays]

This great and wonderful new wall will have a deep footer completely underground, so that alone is a deterrent to burrow.
The other good news is we can fill their amateurish tunnels with rebar and concrete far faster than they can dig them.

[wbarmy]

I’ve always felt that drug users HATE themselves, and the drugs help them get through the day. Take away the drugs and they would probably suicide themselves.

But take away the drugs and they might realize they need help, and that opens an opportunity to reach them with Christ.