This is another Vietnam War scenario and is very different to Down Town. You are in charge of a selection of light US and South Vietnamese warships tasked to prevent the North Vietnamese supplying their land forces by sea. You have a Neptune patrol plane in support and some Huey helicopters and Bronco attack planes on call.
It is basically quite an easy scenario, with the few Vietnamese armed junks and escorting patrol craft having little real chance of getting through. Unfortunately, it has a couple of annoying bugs.
First, you get a series of contacts with civilian junks which bloody-mindedly violate the US exclusion zone. Fair enough, but in real-life, such vessels would be boarded and searched. There is no mechanism to do this in the game and you are left shadowing the boats, just in case, while getting repeated spam messages about them.
Secondly, while your Neptune aircraft is useful for recon and can be used to (fairly safely) attack enemy patrol boats, it insists on going RTB once out of ammunition. You have to continually give it things to do to avoid losing it. Its primary mission is recon and the game should allow it to do this without ammo.
A third gripe happened when a patrol boat went after one of my lighter PCF patrol craft. I didn't want to fight it without support and told the PCF to run away and lure it onto a heavier Coastguard cutter armed with 5" guns. I could only do this by detaching it from its patrol mission, which was rather artificial and contrived (even telling it to fire only in self-defence didn't stop it approaching the Vietnamese vessel). Worked in the end, though.
This scenario has the virtue of being different and showcasing some of the smaller, less glamourous warships in the world's navies. Coming directly after Down Town, it also illustrated the big range of difficulty in Command scenarios.