My story Aztlan Portal is set in the Mexican state of Chihuahua. Partially because in 2018 it is the "fracture line" between the notorious Los Zetas and Sinaloa cartels. Ciudad Juarez is adjacent to El Paso, Texas.
https://storiesonline.net/s/25148/aztlan-portal
New Year's Day 2023 persons unknown used Armored Vehicles to Break Into Cereso State Prison in Ciudad Juarez. 10 Guards, and numerous prisoners have been killed, and a riot ensued!
https://www.borderreport.com/news/24-inmates-escape-from-juarezs-cereso-prison-in-violent-outburst-that-leaves-14-dead/#:~:text=The%20Chihuahua%20Attorney%20General's%20Office,least%2013%20others%20were%20injured.
Cereso is short for Centro de Reinserción Social.)
Investigators say armed men arrived at the prison in armored vehicles around 7 a.m. when they shot at the security officers.
Shootouts in Ciudad Juarez and surrounding areas are related to the Prison Attack! Mexican Army and law enforcement personnel (often even better armed than Mexican regular army troops) are responding.
Part of the reason I chose Mexico as the setting, and Chihuahua in particular is the disorder that would delay responses to the alien invasion. Not to mention a reluctance to make public such an invasion without "proof" the aliens are "real" lest the government appear foolish.
Also, similar to France, with Paris, South Korea and Seoul, Communist China and Peking, Mexico City is The CITY and the "hinterlands" are denigrated by TPTB (The Powers That Be) resulting in quite serious problems being ignored until after a tragedy, rather than "proactive" responses to prevent a crisis.