National Defense Transportation Day is observed in the USA every third Friday of May. This observance recognizes the contributions of men and women to the nation's well-being and defense. Established by Congress in 1957, it was updated in 1962 to include the entire week as part of National Transportation Week. Although it does not hold the status of a public holiday, various activities take place, including educational expos on transportation, poster contests for schools, and programs featuring guest speakers. Each year, the President of the USA issues a proclamation designating this day for observance, highlighting the importance of the country's transportation system and its maintenance for national defense and peace.