seeming indecisive and uncertain will jeopardize your authority as a leader. Whether that is displayed by asking questions or by simply hesitation in the face of urgent need. There are times and situations that require immediate action and if you are to maintain leadership through means other than rank then you will have to be seen as acting in those situations. To stop and evaluate, plan, discuss, hold a meeting, attempt to attain a consensus at a time like that will get you disrespect if not revolt. The leader should have enough experience to deserve the position of leadership. If they do then they will have an action response to urgent situations. Certainly techniques are being refined all the time and someone with the latest training may have some techniques that are better - that doesn't take into account the need to maintain a central point of authority and direction in an emergency situation. Better that everyone is following ONE plan than that any one individual is using the BEST technique. (within limits of the protocols and standard of care). If you find any individual who is using out-dated technique or sloppy practice that is something that needs to be addressed - but not at the scene. At the scene everyone does their best - indians stay indians and chiefs stay chiefs. If the indian spots bad technique or sloppy practice by the chief they should immediately bring it to the attention of the individual after the incident and if that isn't well received then the issue will need to be escalated. It is often possible to raise such issues non-confrontationally by asking the leader to teach you why and under what circumstances they prefer the older techniques to the newer ones. Sometimes simply asking the question will cause the individual to reconsider their practice. Don't expect them to do anything other than justify their actions in the conversation. But if you thank them for their time and expertise and let things drop you might find that they behave differently next time.
Never, Never, Never undermine the Incident command. If necessary to save a life that has been tiraged into your responsability you may consider disobeying silently - even that is fraught with difficulty because not only are patients triaged but also are supplies and if your disobedience uses supplies needed elsewhere you may have caused more harm than good in the bigger picture.