The Blackhawk is unusual. But sounds like it never landed. I hate to say it but sometimes those guys can be clowns and do stuff that just seems like showing off. I see it every once in a while but never with a Blackhawk.
Army and Marine convoys move all around the area a lot. I have seen that for years since I've been here. It is when they set up a surprise reten that gets a bit creepy but interesting to see how they operate especially on back roads. If you look on this map (link) and the road that goes through La Cucaracha on to Alta Vista and Mex200. That is the dirt road leading from the little airport just above La Penita to either Puerto Vallarta and or Guadalajara. So there are reasons those guachos are cruising in their convoys. This is OG Chapo territory and has a history.
More likely as a tourist you will see convoys of Vallarta Adventures in their yellow Moogs taking tourists to the zip lines.
Many of the older fishermen along this coast have had experience moving product through this part of Nayarit, near Vallarta.
I haven't seen anything reported on this otherwise but I thought it had been:
On Saturday, May 2 in the afternoon there was an attack on Cremeria San Jose in Puerto Vallarta located near the airport and convention center, I believe. It was the only residual or follow up attack that day in PV.
But wait, there's more... in Mezcales (gateway to Nuevo Vallarta) and San Jose del Valle, inland on the route to the sierra and mountain narco territory, there was a chase and shoot out leaving one Federale dead and escaped purps. This happened this morning and it turns out in front of a Ley market where my compadre and I buy meat and have it grilled in front of the store. Close... http://www.noticiaspv.com/policia-nayarit-protagoniza-persecucion-y-disparos-a-sujetos-en-bahia/