Charlie is golfing with his dad and is wearing a golf glove on his left hand. Then in the next scene he is still wearing the glove, but it's on his right hand. Then the glove disappears, but you never see him take it off.
When Don is talking to Blake in the junk yard, when seen from the front he's wearing a jacket, from behind he's not.
Early in the episode the military attaché said that they have two F-16 fighters airborne, whilst during the fly-by scene the editors have added two F-18s instead.
It is said a faulty rudder caused an uncontrolled dive. The rudder does not control pitch, it controls yaw side to side.
The NTSB investigates transportation accidents not UFO s.
The cast listing indicates that Gloria Reuben plays a character named Erica Quimby, but in the actual episode she is referred to as Erica Westin.
They say the UFO took off from an airfield north of the San Fernando Valley but they are shown questioning people at Santa Monica Airport which is south of the San Fernando Valley.
They say they are searching Signal Hill when in fact they are just east of downtown LA by the LA River.