Large light approaches/retreats silentlyHello. Native Tucsonan here. I just noticed to the West a sea foam green bright light with my husband & neighbors at just about 7:15pm-7:17pm over the CAP canal, next to Ryan’s Air Field, on Bopp Rd. in Tucson, Arizona. It was a light that seemed to come in towards us slowly, then it backed out as fast as it had appeared-finally fading to black (full night sky). The entire experience lasted about 15 minutes, as the glow remnant took this long to dissipate fully.At first we thought that we were witnessing an aircraft/drone (silent) headed directly towards us at about 25mph due to a bright whitish-green “spotlight” approaching us. The spotlight had a bright green line\in its center. It startled & frightened us. Then it reversed, heading backwards as fast as it had come in.((NUFORC Note: U. S. Navy missile launch. PD))