 Here, at the United States Army Proving Ground in Aberdeen, Maryland, are some of the weapons provided to the American soldier during other eras of our history. This was America's firepower yesterday, the rifles, the wheels, the armor, the tracks that moved our army and took the battle to the enemy. This is America's firepower today, an achievement in advanced military techniques to meet the swiftly changing needs of our modern army. Today on The Big Picture, you will see how this unique firepower and mobility are developed by the United States Army Ordnance Corps through its dynamic arsenal system. The United States Army presents the Big Picture, an official report produced for the armed forces and the American people. The Army's modern arsenals located in various parts of the United States have come a long way from the old gun and powder storage depots they used to be back in the early days of our country's history. Today's arsenals are vast engineering laboratories where highly skilled technicians carry on continuous research, development, and testing of the complex weapons systems we need to protect our country.