USO Tours were conducted to entertain US military personnel stationed in Vietnam.  To boost the morale of the troops, these tours would include a variety of acts including dancers, singers, musicians and comedians.  These acts gave the often home sick troops a taste of the current popular culture from home. This particular USO troop pictured above was James Drury, the star of The Virginian, one of the longest running westerns on television. A typical USO visit would last several hours and would entertain audiences ranging from less than one hundred to several thousand.