say you are diving with a buddy, minding your own business,

when suddenly, you don't feel so well... you stop... wonder,

"what's going on?"  but you keep feeling worse and worse,

and you vomit into your mask.  you taste blood. unable to do anything

about it, you slip into unconsciousness and almost certain death by drowning.

     this may likely be the scenario should you dive too close to

one of Raytheon's latest Swimmer Denial Systems, used to protect

a number of U.S. ships and installations.  The system is  described as

follows:

Raytheon’s underwater sensors detect any unwelcome presence and trigger an underwater

sound system that emits extremely powerful pulses of low frequency audio. The pulse rate

and audio frequency are chosen to make human organs resonate like organ pipes, causing

swimmers to vomit into their masks or suffer internal ruptures.

    here is Raytheon's patent application for the system.

    now, i don't know about you, but i sure hope a ship protected by

this system doesn't come tooling around while i'm diving near the

Mayport Naval Station!  that would surely suck...

   and i wouldn't even get the satisfaction of b***ing about it here...