From: kefischer@iglou.com   
      
            I thought it was well known that a helicopter cannot hover   
   or land in a courtyard, the walls cause the airflow to form a   
   doughnut shaped torus of air, instead of being accellerated   
   downward and outward.   
      
            This made the news 20 or 30 years a go when a woman   
   pilot was asked to hover in a church or school courtyard while   
   a man tossed out prizes of some sort.   
            People were decapitated when the hekicopter lost   
   lift and fell.   
      
      
            As far as low radar cross section helicopters go, the   
   patent office included a 1977 study on the uh-60 in the   
   office response to the application I mailed on Dec. 22, 1978.   
            It was stamped "Level 12", whatever that meant,   
   I had no clearance at any time, and that application was   
   never under secrecy order.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)