Buck Nelson was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 farmer

Farmer

A farmer is a person engaged in agriculture, who raises living organisms for food or raw materials, generally including livestock husbandry and growing crops, such as produce and grain...

 who claimed to have had an encounter with an unidentified flying object

Unidentified flying object

A term originally coined by the military, an unidentified flying object is an unusual apparent anomaly in the sky that is not readily identifiable to the observer as any known object...

 and its humanoid crew in 1954 while living in Missouri

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

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His account states that he saw three flying saucer

Flying saucer

A flying saucer is a type of unidentified flying object sometimes believed to be of alien origin with a disc or saucer-shaped body, usually described as silver or metallic, occasionally reported as covered with running lights or surrounded with a glowing light, hovering or moving rapidly either...

s over his farmhouse; he took photographs and attempted to signal with a flashlight, but was attacked by a beam of light. However, he goes on to claim that, after dusk fell, three "friendly spacemen", similar to humans and accompanied by a gigantic dog, "Bo", visited him and spent some time talking with him.

Nelson further stated that two of the aliens were named Bucky and Bob, and their main message concerned the "Twelve Laws of God", derived from the Ten Commandments

Ten Commandments

The Ten Commandments, also known as the Decalogue , are a set of biblical principles relating to ethics and worship, which play a fundamental role in Judaism and most forms of Christianity. They include instructions to worship only God and to keep the Sabbath, and prohibitions against idolatry,...

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