Department of Homeland Security investigators (acting under-color-of-law) discover a concrete reinforced drug smuggling tunnel with a rail and ventilation system. Sophisticated tunnels of this construction are usually discovered on the average of one per year.
[added 8/31/2024]
Subsequent Events:
References:
Stakeout at National City stash house leads to sophisticated ‘narco-tunnel’ | KPBS Public Media
www.kpbs.org/news/local/2022/05/16/stakeout-at-national-city-stash-house-leads-to-sophisticated-narco-tunnel
Drug smuggling tunnel with rail system uncovered on US-Mexico border | US news | The Guardian
www.theguardian.com/us-news/2022/may/16/california-drug-smuggling-tunnel-us-mexcio-border