I had no intention of starting an argument, or any personal attacks. However, I still can't see why an FRS that uses Oscar, Delta and Tango hadn't seen that these took the place of the full word and so that saying that too wasn't necessary. I do think that a slight lack of common sense is shown in those who came up with the message. Also there is no legal requirement to use a tactical mode. A RA is required in any work done, but tactical mode declaration would not be a RA. What has happened is that FRS have taken the view that declaring the mode in a message is a record that an RA has taken place. This is only partly the case as any record of an RA would need to include the hazards, risks and control measures. Tactical mode declaration is an indication, no more and something of a fudge of the 'recording' that the law would require evidence of in any investigation.