Hello, I am Kenn Anderson, about 65 years old (in 2016), living in San Diego, CA. I am a retired electronics engineer who spent nearly all of my working career with the U.S. Navy's Electronics Laboratory Center (NELC), which has been renamed many times over the past 40 years. The current name, for 2016, is the Space and Naval Warfare Systems Center Pacific. My area of expertise is microwave propagation over the earth's surface and I am a member (past Chairman) of the US National Academy of Science's National Committee for the Union of Radio Science Commission F (Wave Propagation and Remote Sensing). I am retired but if you have any questions about wave propagation over the earth's surface I'll likely know someone who can answer.