It was during a recording session for my podcast a few years ago.

I was sitting across from my guest, having a fairly standard conversation about acting, comedy, and surviving in this industry.

Then, out of nowhere, my guest flipped the script on me.

He leaned into the microphone and asked a completely unexpected question.

“Alan,” he said, “out of all those years, all those long days in the dirt on MAS*H, what was the single hardest time you ever had keeping a straight face on camera?”

My mind immediately went back to Stage 9 at the 20th Century Fox lot.

It was the third season.

We were exhausted, as we always were, but there was a different energy on the set that week.

We had a very special guest star coming in.

His name was Harry Morgan.

Now, this was before he became our beloved Colonel Potter.

In this episode, he was playing Major General Bartford Hamilton Steele, a man who was completely out of his mind.

Because Harry was a veteran actor, a Hollywood legend, the core cast wanted to be on our best behavior.

We wanted to show him how incredibly professional we were.

The scene was set in the cramped briefing room.

Wayne, McLean, and I were standing at attention, shoulder to shoulder.

The director called action.

Harry began pacing back and forth in front of us, delivering this incredibly intense, rapid-fire military monologue.

I was biting the inside of my cheek so hard I could taste copper.

McLean was staring straight ahead, rigid as a wooden board.

The tension in the room was incredibly thick.

The heavy film camera slowly pushed in on Harry’s face.

He abruptly stopped pacing.

He locked his eyes directly on us.

The entire soundstage was dead silent except for the hum of the lights.

I could physically feel the pressure building in my chest, a desperate need to break the awkward tension.

And that’s when it happened.

Harry Morgan, with the most severe, intense, authoritative military glare you could possibly imagine, suddenly broke off his serious briefing.

He snapped his head, looked off into the empty middle distance of the soundstage, and screamed at the top of his lungs.

“Not now, Marjorie!”

There was a beat of pure, stunned silence.

Then, the entire room completely exploded.

I mean, we utterly lost our minds.

McLean folded in half, laughing so hard he looked like a collapsing card table.

Wayne had to turn his back to the camera and walk into a dark corner just to hide his face.

I am pretty sure I snorted out loud, an undignified sound I am still not proud of today.

Our director yelled cut, but it barely registered because he was gasping for air himself.

But here is what made Harry Morgan an absolute comedic genius.

Through all of this chaotic noise, Harry just stood there.

He did not crack a single smile.

He did not blink.

He did not twitch a muscle.

He waited with that same terrifying glare, completely locked in character as if nothing had happened.

The assistant director finally managed to get us calmed down.

We had to reset the scene from the top.

The makeup team rushed in to wipe the tears of laughter off our faces.

We got back into our stiff military positions.

The clapboard snapped shut.

Action.

Harry started his aggressive pacing all over again.

He delivered the complex monologue perfectly.

He got to the exact same spot in the script, snapped his head to the side, and screamed the line again.

This time, we did not even make it a full second.

I made the fatal mistake of looking over at McLean out of the corner of my eye.

McLean had waterfalls of tears streaming down his face, his shoulders shaking uncontrollably.

Wayne was gripping the edge of a wooden prop table to keep his knees from giving out.

It was a complete disaster in the best way possible.

The contagion of laughter quickly spread to the rest of the crew.

You always know you are in trouble on a set when the camera operators start shaking.

The heavy rig was bouncing up and down so much that the focus puller threw his hands up in defeat.

Tomorrow’s dailies were going to look like a massive earthquake hit the Korean War.

The director had to step in and stop filming entirely.

Multiple retakes went completely down the drain because every single time Harry screamed at his imaginary wife, the absurdity broke us.

We must have done at least fifteen takes of that one relatively simple shot.

It escalated to the point where just looking at the subtle twitch of Harry’s eyebrow sent the cast into helpless hysterics.

While the camera department was reloading the film magazines, Harry finally broke his intense character.

He slowly leaned his head over to me, looking over his spectacles.

With a completely deadpan expression, he whispered softly, “Am I being too subtle?”

That was the final nail in the comedic coffin.

That comment destroyed whatever tiny shred of professional composure I had left in my body.

I actually had to walk outside the soundstage.

I stood there and breathed the smoggy Los Angeles air for five solid minutes before I could walk back inside.

It was a chaotic filming incident, a day where we burned through expensive film stock for no reason.

But looking back on it now, I realize exactly how important that afternoon was.

That was the moment we knew Harry Morgan was fundamentally one of us.

He possessed that exact same twisted, absurdist humor we relied on to survive that brutal shooting schedule.

He understood the unique comedic music of our show perfectly.

A year later, when McLean decided to leave the series, the network started having frantic meetings about who could replace him.

There was absolutely no debate among the cast members.

We all knew exactly who had to take over command of the 4077th.

It had to be the guy who made us laugh so hard we physically couldn’t stand up straight.

Laughter really was the glue that kept us together in those canvas tents for all those remarkable years.

What is a memorable moment at your own job where you laughed so hard you couldn’t breathe?