4 orange lights , one behind the other. Then a 5th one going faster to catch up. One by one they all went dark.

five orange lights , round, about the size of the letter O in a persons normal handwriting but up in the sky , of course,. The first four were in line ,or formation, one behind the other.  They were coming in from about  30 degrees to the west, or  to the left,  from where North is on the compass. And then we saw the 5th one. It had been lagging behind and  was flying faster than the 4  so I“m assuming it was trying to catch up. They were silent, flying about as high as helicopters do.  Then one by one they went dark. Lasted about 3 minutes. It was 11:10  or 23:10 military time no clouds in the full, moonlit evening sky. And even with binoculars we could not see the shape of the aircraft.