Mars Bluff originally known as Marr’s Bluff is a small community located in Florence Country, South Carolina. While this small community has virtually vanished it has been home to many historical events. Mars Bluff was first home to the Mars Bluff Naval Yard, which was one of many inland Confederate naval yards in the south.

However, Mars Bluff’s claim to fame happened on March 11, 1958 when a U.S. Air Force B-47 Jet accidentally dropped an atomic bomb on the small town close to Walter Gregg’s family home. Because the combustible material had been removed and stored in a containment area the impact was less severe. Several homes and business were damaged after impact; however, there were no human casualties.