July 3 (UPI) -- On the eve of the 249th anniversary of American independence, NASA on Tuesday showcased a patriotic image of Old Glory as seen from hundreds of millions of miles away. A plaque bearing the United States flag is on an aluminum plate at the base of the mast, or "head," of NASA's Perseverance rover on the Red Planet. An image of the flag was taken on June 28 by the WATSON (Wide Angle Topographic Sensor for Operations and eNgineering) camera on the end of the rover's robotic arm. On