When I was on the Coast Guard Cutter VENTUROUS (home-ported in LA) we used to operate south of the CA-MX Border - and out to sea. One bust we had was approximately 600 nautical miles west southwest of San Diego. We recovered over 3,000 Lbs. of bulk Thai marijuana; made 3 arrests, and seized a beautiful Choy Lee (Taiwan Builder) 49' Ketch. It was a "by the book" boarding and arrests - solid convictions all around.
We "cooperated" with the Armada de Mexico (Mexican Navy) even did some ops with one of their ships. It was an old WWII US Navy Ocean Going Minesweeper converted to a patrol boat. When we went into Ensenada one time we hosted the Navy Admiral in charge of that coastal area of Mexico - from Tijuana south to Cabo. Not that he was old or anything but I think he had close to 60 years in the Mexican Navy - the infrastructure and equipment of the Mexican Navy was equally old. In one port call at Puerto Vallarta we were challenged to a basketball game with the MX Navy. Even with me in the game it was too easy; at the half our CO told us to ease up, let them in the game. They figured it out very early and were pissed. Their CO chatted with our CO and we resumed the pasting. Of course payback was on the soccer field; we did manage to score a goal (to their 4 or 5) they did not cut as any slack - nor did we wimp out; we tried but the pitch was almost like playing on cement - hard, gravelly clay, dried in the summer sun! No sliding tackles! This was during the 1985-88 time frame; in 2000 - 2001 I spent my final two years on the MOHAWK home-ported in Key West. We were the first US Naval "Combatant" to enter Vera Cruz, Mexico; you know "The Halls of Montezuma" fame. Across the pier from us was a very modern up-to-date patrol boat and every morning, in a display to show off, two deuce and a halfs with a platoon of Mexican Marines would do a slow drive-by of the cutter. Their uniforms were modern, well maintained, and the Mexican Marines looked like lean, mean, fighting machines - definitely not the stereotypical sort that were parodied in the 60s and 70s in the movies.
I've been to Mexico City in 2004 and 2005; the Mexican Military is a sharp looking group with modern equipment. Outside of Acapulco we were stopped at a checkpoint manned by the Marines; Ma Deuces, sand bags, and Humvees at the ready. A cousin of my wife is married to a pilot in the Mexican Air Force, at the Air Base in Acapulco they were flying "crop dusting" missions with Bell Jet Rangers, supported by Pilatus PC-9 Ground Attack aircraft:
I know, first hand, that several of Mexico's most vicious cartels were started by police and military personnel but for the most part today their military looks good with modern equipment and fit and trim members.
Oh yeah - a beautiful 1911!