Not surprised, I had just never heard of Mexico having much of any thing except some kind of army.
I can’t find an authoritative source, but from the news stories, it seems like in the hierachy of trust among Mexican military forces, they are pretty highly trusted.
I just notice that when there’s a major raid, or a big wheel of the cartels attacked and killed in a shootout, Mexican Marines seem to be the ones. The Beltran killing was one of their ops.
Guess we’ll find out when the Mexican version of “Killing Pablo” gets printed in 5 or 10 years.