Dulles rested the rifle on the back of a chair to steady his aim.

The motorcade passed the Sheriff's office. Everything appeared normal to Oswald.

Dulles heard the cheering get louder as the limousine came into view. He sighted the President in the scope. Governor Connally, riding in the right center seat, waved his hat like a rodeo cowboy.

Abraham Zapruder looked through the viewfinder of his new home movie camera and waited for the motorcade. As it rounded the corner and came into view, he began filming.

The limo rolled to a spot directly in front of the schoolbook depository. The President waved and smiled. Dulles sighted the back of the President's head and aimed slightly high; wanting to compensate for the forward motion of the limousine. He squeezed the trigger, depressing the button switch and causing the transmitter to send a burst of frequency ALPHA from channel A--the sabot projectile began its trip down the barrel. A BANG! Emanated from Dulles's rifle. Simultaneously, the radio signal activated weapon A-1.

The limousine rolled past a street sign, which obscured Zapruder's camera view.

A-1 fired. A puff of smoke and flash of light appeared for an instant along the top edge of the right rear seat. Smoke rose above the President's head and appeared over the street sign in the viewfinder of Zapruder's camera. The swirling air around the limo dissipated the smoke quickly.

PROJECTILE A-1

Projectile A-1 passed through the back of the President's coat and shirt, then entered his right rear shoulder six inches below the shirt collar. It passed between the posterior segments of the third and fourth ribs, then ripped through the upper lobe of the right lung.

Thirty feet from the tip of Dulles's rifle, the plastic ring around the sabot fell off--the slug continued moving towards the limousine.

A-1 passed from the apex of the right lung into the right side of the neck. It damaged a large nerve bundle (brachial plexus) and initiated a reflex reaction, which caused the right arm to jerk upwards.

The sabot continued moving towards the limousine.

A-1 missed the major blood vessels in the neck, but damaged the right spinal accessory nerve; causing the shoulder to shrug. It crashed through the right side of the base of the skull and destroyed the brain stem, then moved upwards through the right side of the brain--damaging the small cranial nerves which control the facial muscles and eye movements; resulting in a strange and contorted expression on the President's face. Finally, it struck the inner surface of the top of the skull (parietal bone) and came to rest.

The damage to the brain stem disconnected the brain from the spinal cord; causing the President to assume a decorticate posture (all flexor muscles reflexively contract). The hand and arm contractions were visible to the crowd--it appeared as if he clenched his fists and reached for his throat.

The sounds from the sabot rifle and Weapon A-1 echoed and reverberated throughout the area. Bystanders in different locations perceived the sounds differently. Zapruder picked up the limousine in the viewfinder of his camera as it drove out from behind the sign. The sabot flew over the President, just missing him.

Governor Connally reacted to the sound of limo weapon A-1. He turned his head to the right and looked for the source. As he started to turn forward again, the sabot projectile struck him.

The sabot hit the Governor before the sound of the rifle reached him. It struck with a downward trajectory--entered the right rear shoulder, passed through his shoulder blade, then shattered a posterior segment of rib. It passed through the upper half of the right lung and exited the chest just below the right nipple. It fragmented--one half struck the right wrist causing the Governor to drop his cowboy hat. The other fragment slammed harmlessly into his left thigh without penetrating the skin, then fell to the floor. He perceived the rifle sound after getting hit.

Dulles ducked below the open window and worked the bolt action, ejecting the empty casing from the chamber and resetting the trigger. He reached for the channel selector knob on his radio-transmitter.

Zapruder continued following the limousine through his viewfinder. The President shrugged his right shoulder and turned his head to the left. The First lady had a confused expression on her face.

The gunshots startled Oswald. He figured they were intended to warn the Secret Service. The shots also spooked the limousine driver; he touched the brake pedal for a split second causing the passengers to tip forward.

Jean Hill watched from the north side of Elm Street. As the limousine passed directly in front of her, she wondered why the President had such a strange look on his face. The First lady's expression became fearful.

Dulles turned the transmitter selector knob to channel B and clicked the trigger; depressing the button switch and sending a burst of frequency BETA. Weapons B-1 and B-2 fired simultaneously.

BANGBANG! B-1 created a puff of smoke and flash of light along the edge of the right rear deck behind the President's head. B-2 created a puff of smoke and flash of light on the backside of the right middle seat in front of the President's face. The swirling air around the limousine dissipated the smoke quickly. B-1 struck the President a split second before B-2.

B-1 struck the back of the President's head at the hairline, one-inch right of midline. It fractured the right side of the occipital skull bone, then entered the cranial cavity. The head snapped forward. B-1 traversed the right half of the cerebellum (organ of balance), then entered the right half of the brain, creating a back to front (parasaggital) laceration. It struck the underside of the right parietal bone and sprung the top of the skull open from the inside out; creating a large flap of scalp on the top right portion of the head. As B-1 exited, fragments of skull, pieces of brain tissue, and bloody cerebrospinal fluid sprayed into the air--arched over the First Lady and onto the helmet visor of a trailing motorcycle patrolman. B-1 continued its upward course, traveling high into the air.

B-2 penetrated the shirt collar and entered the right front neck, just missing the Adam’s apple. It tore the right wall of the trachea as it passed back and up through the right neck strap muscle (sternocleidomastoid). It then penetrated the right side of the base of the skull, fracturing the first cervical vertebra. After coursing up and back through the right cerebellum, it struck the inner surface of the occipital bone. It exited the rear of the head just above the hairline, one inch right of the midline; springing open the skull and creating a flap of scalp on the back of the head. A piece of bone blown off the back of the skull landed on the rear deck of the limousine. The head snapped violently backwards.

Mary Moorman, viewing from the south side of Elm Street, heard a bang and thought it was a motorcycle backfiring. She reflexively snapped a picture with her Kodak camera, which happened to be pointing at the back of the President's head. She captured flying skull fragments and a tiny puff of smoke on her photograph. Jane Hillary, viewing from the north side of Elm Street, perceived a white fluffy Teddy bear in front of the President's face (smoke), and a red halo above his head (bloody cerebrospinal fluid).

The First Lady watched with horror as her husband's head blew apart. The President fell forward and to the left. His mutilated head landed in his wife's lap and covered her dress with blood. She noticed the chunk of skull resting on the trunk--instinctively knew it was part of her husband. She climbed onto the trunk and reached for the piece of bone, but it slid away and fell to the street as the limo accelerated. An agent climbed onto the trunk and pushed her back inside.

The sounds of gunshots echoed and reverberated. A puff of smoke drifted placidly over Elm Street as the murder weapon rolled away from the murder scene. B-1 fell back to earth in a parking lot across the street from the schoolbook depository. Senator Yarborough, riding in an open-top vehicle behind the presidential limousine, detected the smell of burnt gunpowder as he rolled through the murder scene.