Skywriting!

I was out in the back yard cleaning and lubricating my bicycle, when I heard the far-off drone of five big radial engines.  I knew by the sound - because there are no radial engines in modern aircraft - that with that many of them, it had to be the "Sky Typers."  They consist of five WW II era North American SNJ training aircraft, and they have a computerized system that controls the release of smoke  so precisely that they can "type" letters with very brief puffs of smoke.  I used to see them a lot more frequently years ago, but it is always a thrill to see them pass over.  Their message was advertising the Mohegan Sun casino, up Connecticut way.