differant colored lights swirling coming towards us a few feet above the ground.

We were sitting on the bank when we saw a vehicle's lights moving above the train tracks. This was about 1/4 mile from us and moving above the train tracks heading south east. It had several different colored lights swirling at its front.  When it was directly in front of us, it made an abrupt 45 degree turn towards us.  It was plain it was not touching the ground. perhaps a few feet above the ground.  Approaching fast it came across the slough and we believed it would hit us.  At the last possible second it made a 45 degree turn to our right into thick trees and vegetation.  There was no audible crash and we did not see it anywhere.  We went the next night to see if it would show again, but instead a military helicopter came and hovered above us and Lit us up like daylight.  We decided to leave and hightailed it to my truck.  Driving away a Sherriff patrol car came meeting us at a high rate of speed.  We kept driving believing we were not welcome there.