Often it is the communications equipment, for which, in some cases, Transport Canada safety regulations may be different from European or American ones. In some cases we may want a multi-mission aircraft so that we can do search and rescue with it and put a winch in a door, which the U.S. army wouldn't do.
My colleagues and I look very carefully at that degree of customization and Canadianization. I know we have some meetings next week at which we are going to have a hard look at some of those questions.