Nathan / Alfred
Sorry for the secrecy! But I'd rather air on the side of quiet given I am unsure how the military will wish to utilise it. Back home, in particularly treacherous spots hunters could leave coded messages to one another warning of trouble or of secrets. A message left on a perilous ledge, for example, might read "take a step forward", alerting the recipient to an unseen treasure below in what merely appears to be certain death.
Of course, some (that I call shitlords) cracked the code and would put such encouraging messages on ledges that did leave to sure death. Which is why if we proceed with utilising this magic here, I would prefer for the code to be as impenetrable as possible.