In the summer of 1969, hundreds of thousands of people descended on a small dairy farm in Bethel, New York for a watershed moment in recent music history: The Woodstock Music and Art Fair.

The four-day festival was a celebration of peace, youth, life, love, long hair and incredible music. However, the fiestival might have ended in disaster, were it not for an unexpected ally.

This is the inside story of how the U.S. Army ran a resupply mission to party-goers at Woodstock.