red and orange lights pulsing in random sequence/ seemed like communicating

we were working a graveyard shift. Our task was to drive test computer software for a new cell phone/cell sites. 6 months of drive testing and this one early morning at approx. 2 am I noticed the object appear (out of know where)over the ocean approx. a mile from where we were driving. As passenger I insisted we stop but the driver sped up and I convinced him to finally stop as well as the other team in another vehicle.
We all stood there on the highway watching the craft start to display what seemed a communicative code. Never a sound, just a display. Then, after about what seemed 10 minutes and not long enough. the craft started to move horizontal in a NW line faster and faster without ever making a noise and just disappeared. Then it seemed the sun rose and that was strange.