Observation in broad daylight, a tetrahedral craft and trailing sphere east-bound and just south of Interstate 80.

Two craft were east - bound, just south of Interstate 80.  Approximate speed was 100 to 110 MPH. Approx height above desert floor was 90 to 105 feet. Triangular craft consisted of frame elements that exhibited an "electric carnival green color". You can see through this craft, to the mountain range beyond. The frame elements turned on and off at random, with no discernable pattern. The estimated length of the craft is 30 feet, the rear width is 12 to 14 feet, and the height is 8 to 9 feet. Trailing behind  this elongated tetrahedral craft was an "electric red" sphere of 24 inches to 36 inches in diameter, and exhibited a flight pattern that was very irregular. A written report and finished drawings to be sent to you by U.S. Mail.  
Hundreds if not thousands of drivers & passengers saw these two craft going east bound.
Source of report indicates that date of the event is approximate.  PD