On Sat, 24 Sep 2005 15:09:22 -0500, "Dan, U.S. Air Force, retired"
wrote:

Actually one would have to be fairly close to an aircraft and
looking at it to see the markings. The siren's sound would be heard by
people indoors or out.

Not sure that the sirens operated unless in a dive. I think it took
dive velocity winds to make it shriek.

Corky Scott