My fiancé and I witnessed a solid red light, moving quickly through the sky, and stopping to hover at irregular intervals. The red light was bright and steady–not flashing/blinking like normal aircraft lights. During one of the stopped/hovering moments, a greenish light began to intermittently blink on and off somewhat similar to aircraft light but with a slower transition between on/off.

During one of its hovers, the red light seemed to split into 2 red lights, at which point the green strobing light was turned off.  A plane passed by in the general vicinity, but above the light, and it seemed to react by suddenly dropping altitude very quickly.  Once the plane had passed, the 2nd red light disappeared/turned off and the green strobe resumed.  The light then drifted slowly in the sky momentarily and then accelerated towards downtown Norfolk at about the speed of a helicopter until it was out of sight.
It could have possibly been a drone but the abnormal flight behavior, time of night, speed and distance covered made me skeptical of that.
It’s hard to estimate the altitude of the light, however it was well below the clouds and normal flight paths of aircraft in the area.
Our backgrounds:  I am a graphic designer, she is a medical professional at a local hospital.