All you clever guys who've got the pioneer make me feel very stupid. I have a completed grid apart from the top row, and even found many of the possible letters therein. It would seem to start -EE (FEE, HEE or LEE) but none of those get me anywhere. LEE seems the most likely. I've tried googling the two words in cols 1 and 11 with the word pioneer, but all I get is people trying to sell me yachting kit. A gentle hint would be much appreciated.