Green light moving north at speed through east side of las vegas.

I was travleing south on Hwy 95 heading from Las Vegas to the city of Henderson passing near the football stadium. All the lights were on, which is what attracted my attention, when I observed a green glowing ball of light traveling north. It appeared to be half way between the stadium and the highway 300 to 400 feet off the ground. The object itself was translucent in nature traveling at a good clip but not so fast as not be able to track it. The area it was in is protected airspace as it was under the flight path of McCarran International Airport. The course it was on would have taken it past Sunrise Mt. and directly over Nellis AFB. The local news did air a report that night of a green light sighted, however it was reported some 15 miles north of where I saw it.
Date is approximate.  PD