Cobra Flight is being published as I speak.
It is already for sale at Amazon, Apple’s iTunes, and Kobo with most of the other on-line book sellers soon to follow.
It takes a while for the catalogue data on books to filter through the various systems so sometimes the book site’s search doesn’t show it. You can try searching on Rick Grant, or Cobra Flight Rick Grant.
I will post direct links here to all the sales sites when the process is complete.