While waiting for a firework show to start, I observed what I thought to be a helicopter close to where the fireworks would go off. Wondering why it would be so close to that location, I realized that it wasn't a helicopter. At first, the external lights blinked only green, eventually it would blink green and red. Shortly before the show would start it disappeared and two smaller craft appeared. One was a solid green, the other a solid red. I tried to film these craft but the were to small for my camara to film. These craft moved and incredible speed and then slow down. The altitude these craft were at exceed and drone that you could purchase for private use. Eventually I lost site of the solid green object and was able to observe the solid red object from time to time. The larger craft reappeared right before the firework show and moved all around the area. These objects made no sound. At times, it appeared to be right next to the fireworks and eventually moved west towards the ocean which was close to the end of the show. At this time, you can see the object move behind trees and shrubs due to its distance and altitude. I spent a number of years in the military and am knowledgeable in our nations aircraft. It is my opinion that this was not a military aircraft. The number of people enjoying the firework show ranged within the hundreds and is unclear if anyone else whittnessed these objects.