Are all your characters modeled after people you know?

With two exceptions across all of my books, my characters are generally more composites of characteristics I’ve observed in others, rather than character “transplants.” Lerris, for example,exhibits the boredom I observed in one of my own children at his age, and several of my characters are pilots [as I once was]. Anna, the soprano sorceress, is largely modeled on my wife, much to her chagrin, and Johan Eschbach is probably the character closest to me in personality, abilities, and habits — except he’s much better at matters than I was.