DUTY OF ONE IN IMMINENT PERIL
A person who, without negligence on his part, is suddenly and unexpectedly confronted with peril arising from either the actual presence of, or the appearance of, imminent danger to himself or to others, is not expected nor required to sue the same judgment and prudence that is required of him in the exercise of ordinary care in calmer and more deliberate moments. His duty is to exercise only the care than an ordinarily prudent person would exercise in the same situation. If at that moment he does what appears to him to be the best thing to do, and if his choice and manner of action are the same as might have been followed by any ordinarily prudent person under the same conditions, he does all the law requires of him; although in the light of after-events, it should appear that a difference course would have been better and safer.
NEV. J.I. 4.14