If anybody is interested here are a couple out of many websites with pictures and information. I'm proud to be a sailor who qualified on the USS Perch and stay aboard until the day she was decommissioned. We did a lot of things that to this day is not public information.
The war took some of the Perch sailors but most made it home from the war.
USS Perch: SOF Submarine | Defense Media Network
In 1965, the Perch returned to war, its third. The Vietnam War would prove to be the conflict in which the Perch saw the most action, much of it special operations missions. The Perch’s deck armament now included two 40 mm guns and .50-caliber machine guns that could be mounted on its conning tower. The Vietnam War for the Perch began in March, when the submarine participated in Operation Jungle Drum III, an exercise in which a 75-man Marine Corps reconnaissance force was landed on the Malay Peninsula. In August and September, the Perch conducted search and rescue operations off the Vietnamese coast. Then at the end of the year, in support of Operation Market Time, the interdiction of communist supply and infiltration along the South Vietnamese coast, the Perch conducted amphibious landings as part of Operation Dagger Thrust.
We save their asses. They were surrounded by the bad guys but we got them all to safety. We done it a WW=II vintage smoke boat (diesel submarine) with no torpedo tubes but lots of guns topside. Up close and personal. You can do the research on the red kerchiefs around their necks. Hint=Moutagnard's
The USS Perch APSS-313, Capitan and crew wrote the book on SOF in Vietnam. We also played hard.
Actually the people of Subic Bay ( Olongapo)
liked us. Nothing was damaged that wasn't paid for 3 fold. When I left Subic as a home port and came back a year or so later I went to my favorite bar. They had my civilian close cleaned and hanging in plastic bag in a closet just in case I ever came back. The Filipino people can be very good friends or enemies. I made friends with them and they will remember that forever and so will I.