Anyone else been hearing this on the CSX or other railroad channels? The message is obviously sent by computer and says something like "CSX 4184, Operator A is down...", repeated three times. I heard Operator A, Operator B, and Operator C. I've never heard a response to these messages. It sounds like the Code 33 buttons we had on our portable radios. If we pressed the button, it cleared the air for us in an an emergency. If the radio didn't detect any movement for 60 seconds, it would send an officer down message with our last known location. I don't know if this is the case with the CSX radios, if it indicates a problem with the locomotive...or what?