The Lockheed P Thirty-Eight Lightning, Kelly Johnson's Fork-Tailed Devil, and the Twin-Boom Fighter That Still Turns Every Head on Warbird Alley at Oshkosh

The Lockheed P-38 Lightning was a twin-boom, twin-engine fighter designed by a 27-year-old Kelly Johnson in 1937 to meet a near-impossible U.S. Army Air Corps requirement. Instantly recognizable for its central pilot pod slung between two long booms, it became one of World War II’s most versatile aircraft - a fighter, photo-reconnaissance platform, and long-range escort that the Germans nicknamed Der Gabelschwanz Teufel, “the fork-tailed devil.” Today only a handful remain airworthy, which is why one taxiing across the grass at Oshkosh still stops thousands of people in their tracks.

What Made the P-38 Lightning Look So Different?

The Lightning doesn’t resemble any other fighter of its era. It has two engines, two booms running the length of the aircraft, and a small central pod that carries the pilot and the guns, appearing to float between the booms.

That silhouette is the direct result of an engineering problem. In 1937, the Army Air Corps asked for an interceptor that could climb to 20,000 feet in six minutes and hold 360 mph at that altitude - specifications so far beyond the fabric-and-strut fighters of the day that they read like science fiction.

To hit those numbers you needed two engines; one couldn’t produce the power. A conventional twin, with engines on the wings and a fuselage between them, was heavy and draggy. Kelly Johnson solved it differently.

Who Designed the P-38, and Why Does It Matter?

Clarence “Kelly” Johnson was a 27-year-old Lockheed engineer in Burbank, California, when he took on the design. He would later become the most celebrated American aircraft designer of the century, creating the U-2 spy plane and the SR-71 Blackbird, and founding Lockheed’s legendary Skunk Works.

In 1937, though, he was simply a sharp young engineer with a slide rule and a hard problem. His answer was the twin-boom layout: pilot and guns in a central pod, two long booms extending back from the engines and joined at the tail.

Inside those booms he added the crucial detail - turbo-superchargers driven by engine exhaust gas, forcing more air into the engines so they kept making power in the thin air up high, where rival fighters ran out of breath.

What Engines and Guns Did the P-38 Have?

The Lightning was powered by two Allison V-12 engines, one in each boom. Critically, the propellers were counter-rotating - one turned clockwise, the other counter-clockwise.

That detail transformed how the airplane handled. In a single-engine fighter, full throttle on takeoff produces torque that twists and yaws the aircraft, forcing the pilot to stand on the rudder. In the Lightning, the two propellers pulled against each other and cancelled those forces out. Pilots called it the smoothest-tracking fighter they ever flew.

The armament was equally distinctive. Most WWII fighters carried their guns in the wings, angled inward to converge at a point a few hundred yards ahead - meaning the pilot had to be at exactly the right range for the bullets to meet. The P-38 concentrated everything in the nose: four .50-caliber machine guns and one 20mm cannon, all clustered in front of the pilot.

Because they were in the nose, the guns fired straight and parallel, with no convergence math. A pilot pointed the aircraft and a solid stream of fire went out dead straight past 1,000 yards. As pilots put it, fighting in a Lightning was like aiming the entire airplane - point and shoot.

What Was It Like to Fly a P-38 Lightning?

Getting in meant climbing onto the wing and sliding down into the central pod. The first surprise was the relative quiet - both engines sat out on the booms, away from the pilot’s head, so there was none of the single-engine bark in the cockpit.

The Lightning used a control wheel (yoke) rather than a stick, more like a bomber or a trainer. With the long, clean nose ahead and no propeller spinning in front of the windscreen, forward visibility was tremendous.

Where Did the P-38 Make Its Name?

The Lightning’s defining theater was the Pacific, where vast distances made a single-engine failure a death sentence over open water. With two engines, enormous range, and the ability to carry drop tanks, the P-38 could reach far out across the ocean, and it came to dominate the skies over New Guinea and the Solomons.

The most famous Lightning pilot was Richard Bong, a farm kid from Poplar, Wisconsin. Flying the P-38, Bong became the highest-scoring American fighter ace of all time with 40 confirmed aerial victories, every one of them in the Lightning.

He was eventually pulled off the front line - too valuable to lose - and sent home to sell war bonds, over his own objections. He was awarded the Medal of Honor. General Kenney observed that Bong wasn’t a fancy deflection shot; his edge was closing the range until he was right on top of the enemy before firing, letting that nose full of guns do the rest.

Was the P-38 Only a Fighter?

Far from it. The Lightning was one of the most versatile aircraft of the entire war. With the guns removed and the nose packed with cameras, it became a photo-reconnaissance aircraft, flying alone and unarmed over enemy territory, protected by nothing but speed and altitude.

Lightnings also served as bomber escorts, dive bombers, and pathfinders leading formations of B-17s, and some carried rockets under the wings. There was hardly a mission the airplane couldn’t be adapted to fly.

What Were the P-38’s Weaknesses?

No aircraft is perfect, and the Lightning had real flaws. In the cold, thin air at high altitude - especially over Europe - it ran into compressibility. In a steep, fast dive, airflow over the wing piled up into shockwaves, the controls grew heavy as concrete, and the nose tucked down where the pilot couldn’t pull out.

Pilots were lost to this before anyone understood it - one of aviation’s first hard lessons about flight near the speed of sound. Lockheed eventually fitted small dive flaps under the wings to help, but the P-38 crossed that frontier the hard way.

The Allison engines could also be temperamental in the cold and wet of Europe, making the aircraft demanding to operate well. In the hands of a pilot who knew it - particularly in the Pacific - it was magnificent.

The Mission That Killed Admiral Yamamoto

In April 1943, American code breakers, having cracked the Japanese naval code, learned that Admiral Isoroku Yamamoto - the architect of the Pearl Harbor attack and Japan’s most important military figure - would be flying an inspection tour on a precise, known schedule.

He was hundreds of miles away, and only one aircraft in the theater could reach him: the P-38 Lightning. Fitted with large drop tanks, 18 Lightnings flew low over open ocean on a long dogleg course, navigating by dead reckoning - compass, watch, and heading alone - for more than 400 miles.

They arrived on time and found Yamamoto’s aircraft exactly where the math predicted. With no GPS and no radar, holding a heading and a stopwatch over featureless ocean for hours to arrive at a pinpoint, it stands as one of the war’s great feats of pure airmanship.

How Many P-38s Are Left Today?

By the end of production, Lockheed had built more than 10,000 Lightnings. After the war, most were flown to desert boneyards and sold for scrap at a few cents a pound - the famous fork-tailed devil chopped into aluminum ingots.

Of those thousands, only a handful remain airworthy today. You can count the flying Lightnings left in the world on your fingers, which is exactly why one arriving at an airshow still draws a crowd.

Why Does the P-38 Still Stop the Show at Oshkosh?

Every July, the Experimental Aircraft Association (EAA) hosts AirVenture at Wittman Regional Airport in Oshkosh, Wisconsin - the largest gathering of aircraft and aviators on earth, and for one week the busiest airport in the world. At one end of the flightline sits Warbird Alley, where the old fighters live for the week.

When a Lightning appears, the volunteers rope off a spot and the crowds line up. Up close, the first surprise is the size: on paper it’s a fighter, but the booms are long and the wing is wide, and standing beneath it between the two booms feels like standing in a cathedral of polished aluminum.

If it has flown that morning, the metal ticks as it cools and gives off the unmistakable warbird scent - hot oil, hydraulic fluid, exhaust, and eighty-year-old aluminum warmed by the sun.

And if you’re lucky, they start it. Two Allison V-12s crackle and pop to life, blue flame and smoke coughing from the turbo-superchargers, before settling into a deep, syncopated rumble as both engines run a hair apart. Then it taxis out and lifts off clean and straight - no torque swing, both propellers biting the air in opposite directions, exactly as Kelly Johnson drew it up at 27.

A Torch Being Passed

The people who keep these aircraft flying are volunteers, not profiteers - there’s no money in it. They spend decades and fortunes tracking down parts that haven’t been manufactured since the 1940s, machining components from scratch, and relearning skills the factories forgot.

They do it so that a kid standing on the grass at Oshkosh can hear those two Allisons crackle to life and understand, in his bones, what Richard Bong heard every morning before he climbed onto that wing. As long as one Lightning still flies, that connection to the past hasn’t gone out.

Key Takeaways

The P-38 Lightning was designed by a 27-year-old Kelly Johnson in 1937 and is instantly recognized by its twin-boom, central-pod layout.
It was powered by two counter-rotating Allison V-12 engines and carried four .50-cal machine guns and a 20mm cannon in the nose, firing straight ahead with no convergence.
Richard Bong of Poplar, Wisconsin scored 40 victories in the P-38, making him the top American ace of all time.
Lightnings flew the April 1943 mission that killed Admiral Yamamoto, navigating over 400 miles of open ocean by dead reckoning.
Of more than 10,000 built, only a handful remain airworthy, kept flying by volunteer warbird restorers.