Interesting, but do they have any idea how far removed they are from the cartels and how they do business? Apparently not, because if they were, they would know that taking the life of one courier is not a big deal, price of doing business to ensure couriers toe the line. They really hold no value on life, and taking a life to send a message to other couriers, well, so be it, no big deal to them.
The Border Patrol Agents are on the line daily, encountering cartel smugglers and there is heck to pay if the smugglers lose a load, let alone a million in cash.
Smugglers, each toting 50-lbs of dope on their back, used to drop their load and run all the time. Now they fight more and run with the load on their back. Why? Because the cartels are tired of the drop-and-run at the first sign of the Border Patrol and this means the cartels started to kill smugglers for doing that. . .message sent and now the smugglers run with the pack and fight.
Your Son has a thankless job, our Government ties their hands to avoid offending Mexico and empowering cartels. Say thanks from me to him, some of us know the difficulties he faces.