Source

This looks like an AC-130J Ghostrider's work. Two shots from the 30mm. We know AC-130 is deployed to PR. Compare here: https://twz.com/air/ac-130j-ghostrider-hammers-amphibious-warship-during-rare-appearance-at-sinking-exercise… As we have discussed before, engaging small boats is something AC-130 crews train for & is an established mission set for the type.