[MilCom] overflight?

[Duane Mantick]

>From about 2300 to 2330 UTC Friday evening, we had
a flight of four (2 pair, I suspect) in a loose
right echelon formation fly past Lafayette, IN 
to our south.  West to East.  I was not in a 
position to listen to any radio at the time.

In the fading sunlight, it was obvious that the
first two aircraft were VERY dark in color, and
probably the third as well.  Fourth was too much
after sunset to get any notion.

They moved fairly slowly at probably 30K plus altitude
as a guess, all same speed.  Anybody get a scanner 
or HF hit on some aircraft over west central Indiana
about then?

Duane