I am a retired law enforcement officer (1991). On Jan 29, 2015 my wife and I were traveling westward on Nasa Blvd approaching Wickham Rd (W. Melbourne, Florida) ( approximately 200' from the intersection), we were returning home from a late dinner near the mall in W. Melbourne. We both saw a green neon light approximately 75 to 100' above Wickham Rd. The light was approximately the size of a traffic control signal light but more neon green in color. The light moved like it was a baseball being thrown in an arc and dropped below the buildings on the west side of Wickham Rd. We both expected to hear a crashing sound and see an explosion, but nothing occurred. We turned right on Wickham RD. and headed North slowly. We both watched intently for any incident of a crash, but there wasn't any. We then returned home and watched the news on TV, the newspapers, and on-line for any mention of others seeing the light and there weren't any reports. We spoke to friends and relatives, asking if anyone heard anything like our sighting but nothing was seen. We then seemed to get involved in our life (My wife has cancer and she is undergoing chemo treatments)and not really forgot about reporting the incident was delayed until now. The location of the sighting is on the western boarder of a runway of the Melbourne International Airport. I have seen many airplanes landing in a easterly direction at that site but never taking off so I do not think it was an airplane, just 1 light not a series like on an airplane.