This whole things reeks of retardation.
You've got Silvercorp, the apparent employer of at least two of these guys, tweeting about a successful incursion into Venezuela two days ago.
Now I've bumped into a few guys from the farm back in the day, and while they never struck me as particularly bright or even tactical, I doubt the Agency would be dumb enough to broadcast their moves through social media. Nor does it strike me as a realistic approach to establishing assets in country.
Silvercorps is only two years old. I'm think this might have been a private enterprise to get the attention of our state department and hope for a contract. Which is unfortunate, because it gives Maduro political points, and will be hard to deny as denial is always seen as confirmation of covert activity.
This whole thing has "derp" written all over it. If this was an actual sanctioned thing, then everyone involved in the planning and approval needs to be shitcanned immediately, and any elected or appointed official needs to be tossed out on their ass.