Some of our personnel who were attending the airframes and engines courses on American Aircraft at ISMALIA have returned and the comments of one senior N.C.O. thereafter are illuminating "If you've serviced engines under active service conditions" he says, "there' s nothing they can teach you at that school. There's a lot you can teach them. But if you're new to the game and haven't seen an American engine yet, well, it's quite a good thing." The percentages obtained in the examinations on the course by various members of the artisan personnel seem to bear out his statement.