Raphael Satter (December 29, 2013). "Report: NSA intercepts computer deliveries". Retrieved December 4, 2013 - by means of Twitter. The previous time Stallone sang in a movie was in Grudge Match (2013) when he and Robert De Niro executed "The Star-Spangled Banner" collectively. A film depicting the historical past of Jack "Galveston Giant" Johnson, the initially African-American boxing heavyweight winner, is in improvement.