Today, it's common to see people wearing t-shirts emblazoned with Bob Marley's instantly recognizable likeness, and the reggae classics that he recorded with the Wailers are so iconic that they're used in TV commercials. But back on the afternoon of October 14, 1973, when the then-28-year-old singer with the dreadlocks and wispy beard and his band stepped out onto the stage at the U.S. Naval Academy's Halsey Field House, things were quite different.