Continuity mistake: As Gen. Hanley's car pulls up to "Operation Sky Hook" there are two guards at the post, one is standing by the car and one is moving inside the building. In the next shot as the guard walks into the building to call Dr. Marvin, he's alone. (00:08:40)
Visible crew/equipment: Gen. Hanley drives up to "Operation Sky Hook" and the guard says, "No one allowed in, sir. There's a rocket taking off now". You can see the reflection of the cameraman in the side vent window of the car. (00:08:45)
Continuity mistake: At Operation Sky Hook, Gen. Hanley tries to get Dr. Marvin to stop the launch, but he can't. We see the rocket several times on the doctor's video screen and the rocket that actually blasts of is not the same one we first see, as the tail fans are painted differently. (00:10:20)
Continuity mistake: Carol is tending to the barbecue as Gen. Hanley and Dr. Marvin comes out of the house after their discussion. On the table behind her are two coffee pots stacked on top of each other. In the next shot when they all go to sit down the top one is knocked over. (00:12:10)
Continuity mistake: Carol is tending to the barbecue as Gen. Hanley and Dr. Marvin comes out of the house after their discussion. On the table behind her are two coffee pots stacked on top of each other. In the next shot when they all go to sit down the top one is knocked over. (00:12:10)
Continuity mistake: At the barbecue, Carol serves Gen. Hanley and Dr. Marvin two very thick hamburgers. In the next shot when they go to sit down to eat, the hamburgers have gotten thinner. (00:12:25)
Audio problem: Dr. Marvin watches the magnetic interference unit take down an alien spaceship and says, " saucer hit and down in the Potomac". If you look closely his lips do not match what we hear. (00:13:10)
Continuity mistake: As they sit enjoying Carol's barbecue the umbrella on the table behind them is tilted in a different direction between shots as a soldier drives up in a jeep with a message for Dr. Marvin. (00:13:15)
Continuity mistake: At Carol's barbecue a soldier drives up in a jeep with a message for Dr. Marvin stating that they lost contact with rocket No. 11. Dr. Marvin holds the message and an envelope in his hand as they look up and see the rocket burning up in the atmosphere. He never puts the message back into the envelope but when he sits down the envelope is alone and the messages is gone. (00:13:50)
Continuity mistake: Carol talks on the remote TV set to Gen. Hanley and Dr. Marvin in the bunker and we see the rocket behind her with the No. 10 on its fin. The next time we see the rocket as it's being prepared for launch it has the No. 12 on its fin. (00:16:15)
Continuity mistake: Gen. Hanley is up in the control tower as the UFO flies over the base. In the shots from the control tower there's heavy cloud cover but in the shots outside the control tower it's a clear day. (00:18:00)
Continuity mistake: The UFO lands at "Operation Sky Hook" and three aliens walk out of it. At first the building on the left is in direct sunlight then in the next shot as we see the dead alien lying there, the building is in the shade. (00:19:30)
Continuity mistake: Gen. Hanley and another soldier on his left are knocked to the ground as the alien blows up a building behind them. One shot later the alien goes out to bring him back to the ship and now the general is on the opposite side of the soldier. (00:21:20)
Continuity mistake: In their spaceship the aliens use the infinitely indexed memory bank beam to read Gen. Hanley's mind and his hair is combed and his face is dry. In the next shot his hair is messed up and his face is sweaty. (00:24:20)
Continuity mistake: As the motorcycle cop gets his brain scanned by the aliens Infinitely Indexed Memory Bank the brain we see is the same one we saw when Gen. Hanley's got his brain scanned earlier in the movie. (00:24:25 - 00:43:10)
Continuity mistake: Carol and Dr. Marvin are locked in the underground bunker at "Operation Sky Hook" as the power goes totally dead. Somehow in total darkness without any power we still hear the sound of the aliens speaking which is strange because if you look at the tape recorder it's not running at all. (00:24:40)
Continuity mistake: Carol and Dr. Marvin are locked in an underground bunker at "Operation Sky Hook" and the doctor makes a tape recording of himself as the power goes out and the lights start to flicker. He says, "The batteries are failing, the recorder's not running up to speed" but if you look at the tape recorder it never slows down and keeps running at the same speed. (00:25:05)
Continuity mistake: In the underground bunker Carol and Dr. Marvin listen to the aliens voice from the slowed down tape recorder. At first we see the tape in the middle of the spool than ten seconds later it jumps to the end. (00:25:45)
Continuity mistake: Dr. Marvin says the batteries are dead on the tape recording that he makes, yet several shots later the lights behind Carol and he are back on. (00:25:50)
Continuity mistake: Several authentic looking prop newspapers have headlines reading that "Operation Sky Hook has been wiped out" and they all have the same mistake, no date on top. (00:26:40)
