I was sitting in my living room the other night, just flipping through the channels, and there it was.

The old olive drab uniforms, the sound of the choppers, and that familiar camp.

It was a rerun of an episode from the middle seasons, something I hadn’t seen in probably twenty years.

Seeing myself as Colonel Potter always brings back a flood of memories, but this time, it triggered one very specific, very loud memory of a night on Stage 9 that I thought I had tucked away for good.

The interviewer leaned in, noticing the way my eyes crinkled at the corners.

He asked me if it was hard to maintain that stern, professional military bearing when you’re surrounded by guys like Alan Alda and Mike Farrell.

I had to laugh because the truth is, I was often the one who was the hardest to keep in line.

People saw Potter as the rock, the “Regular Army” guy who kept the 4077th from spinning off its axis, but behind the scenes, I was a goner if someone so much as looked at me the wrong way.

We were filming a scene late one Friday night.

On MAS*H, Friday nights were notorious.

We were all exhausted, the coffee had gone cold hours ago, and we were entering that strange, twilight zone of fatigue where everything starts to feel a little bit surreal.

The scene was supposed to be a quiet moment in Potter’s tent, just a few of us sitting around a table.

It was supposed to be a serious beat, a transition between the chaos of the OR and the emotional weight of the episode’s ending.

We had the lights dimmed, the cameras were positioned, and the director was looking for that perfect, somber tone.

I remember looking across the table at Mike Farrell, who played BJ Hunnicutt.

Mike had this way of looking at you—just a tiny, almost imperceptible twinkle in his eye—that told you he was about to cause trouble.

He wasn’t doing anything wrong, he was just… present.

I sat there, straightening my tunic, trying to find the gravity of the Colonel.

I took a deep breath, looked at my cards, and prepared to deliver my line.

I opened my mouth to speak, but instead of the line, what came out was a high-pitched, wheezing sound that sounded more like a dying teakettle than a bird colonel in the United States Army.

I saw Mike’s eyebrows shoot up just a fraction of an inch, and that was it.

The dam didn’t just leak; it burst wide open.

I tried to swallow the laugh, which only made it worse, turning it into a series of rhythmic, shoulder-shaking convulsions that I’m sure looked like a medical emergency to anyone watching the monitors without sound.

I looked at Mike, hoping for a shred of professional dignity to ground me, but he had already caved.

His head was down on the table, his shoulders heaving in total silence.

Then I heard it—the sound of a single snicker from behind the camera.

That was the catalyst.

Once the crew starts, the actors are finished.

I tried to compose myself, I really did.

I sat up straight, wiped a tear from my eye, and barked at the crew in my best Potter voice to “Pipe down!”

But my voice cracked on the last syllable, sending Alan Alda into a fit of hysterics that saw him literally falling out of his chair.

The director, Burt Metcalfe, was trying to be the adult in the room, shouting for “Quiet on the set,” but even he had a hand over his mouth, his eyes watering behind his glasses.

We tried to reset.

The makeup girl came over to dab the sweat and the tears off my face, whispering, “Harry, please, we want to go home.”

I nodded, feeling a genuine sense of guilt.

I was the veteran actor, the one with the long resume, the one who was supposed to be the anchor.

I looked at the script, memorized the four simple words I had to say, and stared at a spot on the tent wall just above Mike’s head.

I wouldn’t look at him.

If I didn’t look at him, I could survive.

The assistant director called for “Action.”

There was a heavy, pregnant silence in the tent.

I could feel the entire crew holding their collective breath.

The camera operator was frozen, his eye pressed to the viewfinder.

I felt the line rising in my throat.

I turned my head slowly, with military precision, and as I opened my mouth, Mike Farrell made a tiny, almost silent “pop” sound with his cheek.

I collapsed.

I didn’t just laugh; I disintegrated.

I fell forward, my forehead hitting the table with a dull thud, and I just stayed there, sobbing with laughter.

At that point, the entire crew gave up.

The boom mic operator lowered his pole, leaning against a crate because he couldn’t hold the weight while shaking.

The lighting technician up on the rafters was laughing so hard he had to grab a support beam.

It became a collective madness.

We weren’t just laughing at a joke; we were laughing at the absurdity of our lives.

Here we were, grown men in the middle of a fake war, wearing itchy wool uniforms in 90-degree heat under studio lights, trying to pretend we were saving lives while playing “Go Fish.”

The more we tried to stop, the more hilarious the situation became.

Every time I looked at the “Potter” hat sitting on the table, I thought about how much the character would despise the man currently wearing the costume.

It took us nearly forty-five minutes to get through a sequence that should have taken thirty seconds.

By the end of it, we were all physically exhausted.

My ribs actually ached.

When we finally got a clean take, the moment the director yelled “Cut,” the entire stage erupted into applause, not because the acting was particularly good, but because we had finally conquered the giggles.

Years later, people ask me what made MAS*H special, and they expect me to talk about the writing or the politics of the era.

And all of that was important, sure.

But for me, it was those moments of absolute, uncontrollable humanity.

It was the fact that we loved each other enough to be able to fall apart like that.

You can’t fake that kind of chemistry.

You can’t script the moment where a seventy-year-old man loses his mind because his co-star made a funny face.

I think about that night every time I see a rerun.

I look at the scene—the one that actually made it into the episode—and I can see it in my eyes.

If you look closely at Colonel Potter in that card game, you’ll see his lips are pressed together just a little too tightly.

He’s not being stoic; he’s trying with every fiber of his being not to spray his ginger ale across the room.

It was the hardest work I ever did on that show, staying serious while my heart was bursting with the sheer joy of being there with those people.

When you spend that many years in a foxhole with someone, even a fake one, you develop a shorthand for joy.

I miss that.

I miss the heat of the lights and the cold coffee and the way Mike Farrell’s eyebrows could ruin a perfectly good Friday night.

But mostly, I miss the laughter that felt like it would never end.

Does a specific memory ever make you lose your composure even decades later?