The Commander makes the call. There is no room for anyone to 'stand their ground' against the Commander, unless it is the F/O and he/she better be 100% correct, and it has to be the safety of the a/c. Anyone, anyone, who creates a 'situation' with the Commander, when what is at stake is less than stated safety, and within the purview of their own power to acquiesce, doesn't understand the nature of the environment. Now this can be egregious, or it can be incremental, either way, to play chicken with the Captain or any designated pilot is inexcusable, drawing a line in the sand if you are not in command is asking for correction. The Commander's job is to draw said lines, for those who don't 'get' the process. This is up to the hearing, and I remain surprised why people are still guessing without facts. BoF had her/his own facts, such as they are, and those will get an airing. NOT HERE. Discretion.