Thanks for your replies everyone.
I was a huge fan of Mr. Boma. he was portrayed as a confident and competent officer who had an antogantistic side and not afraid to stand up to a superior officer. He would have made a great regular.
Just on the subject of Mr. Boma I was terribly disapointed a few years ago when visiting the Boma restaurant at Animal Kingdom Loge in Walt Disney World. None of the employees there had ever heard of him !
A boma is an enclosure in a few African languages, like a stockade or a walled village.
(-which I only know from reading Edgar Rice Burroughs' Tarzan novels.)