On February 17, 1974, United States Army Private Robert Kenneth Preston (1953–2009) took off in a stolen Bell UH-1B Iroquois "Huey" helicopter from Tipton Field, Maryland, and landed it on the South Lawn of the White House in a significant breach of security. Preston had enlisted in the Army to become a helicopter pilot. However, he did not graduate from the helicopter training course and lost his opportunity to attain the rank of warrant officer pilot. His enlistment bound him to serve four years in the Army, and he was sent to Fort Meade as a helicopter mechanic. Preston believed that this situation was unfair and later said that he stole the helicopter to show his skill as a pilot.