Red lights seen in the sky.

Around 8:00pm my parents and I were sitting in front of our house just chattering when we start seeing a red light in the sky.  First we thought it was a plane because it is in an area where a lot of planes pass.  The light disappears like a minute later. 
We did not think much about it until we saw an actual airplane and then we knew that what we saw was not a plane.  The plane lights were smaller and blinking while the red light were bigger and motionless.  
Right after that we saw another three red lights forming a triangle and moving, but they disappeared again a minute later one by one.
After a minute or two of those lights disappearing we saw another two lights, all of them coming from the same part of the sky.  One of the lights did like the others and disappeared and the other one start to look like it was going down somewhere and we lost track of it.  
Finally a last red light appeared in the sky but it disappeared sooner that the others lasting less than 30 seconds. We did not saw any other red lights but planes that night and there were no clouds around during the sightings.