Last week, I attended AFCEA West 2016, a conference in San Diego every year. On Tuesday night, I was at the Gaslamp Marriott rooftop bar which overlooks the convention center and Coronado island. I was in a group of 5 people and 3 of us were facing Coronado island when we saw an unmistakable green streak of light that looked like a shooting star except that it was green. 3 people noticed it and gave out oohs and aahhs. I high fived someone who also saw it. I would have concluded it was a shooting star but it was clearly low altitude and more importantly it changed direction slightly and gained altitude. Here's a key thing: this area is restricted airspace because Navy ships dock there and there is a Naval Air station there as well. Whatever this object was would have been both in restrictive airspace due to the Navy base but also due to the airport nearby. I've seen shooting stars. I've seen fireworks. I've seen every type of conventional aircraft and I've seen green laser lights in the sky. This object was none of these.