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)
Audio problem: An alien craft is spotted flying around inside of the Belmont lab above their heads and Maj. Huglin picks up and throws a wrench at it. We see the wrench hit the support girder near the ceiling but the sound is a second late. (00:50:20)
Audio problem: After Prof. Kanter is incinerated by the alien's beam, Maj. Huglin points his shotgun at the alien and fires. If you look closely he pulls the trigger the first time and the gun misfires and you can see the recoil but not hear anything. (00:55:45)
Audio problem: As the aliens announce their intentions to the people of earth Dr. Marvin walks up to a television set in the back of the lab and turns it on. We hear the over-dub of the aliens speaking through the television set but it's obvious that the unit never comes on. (01:04:55)
