The company completed initial ground vibration testing for the the first production VH-71 presidential helicopter. The testing was conducted on pre-missionized aircraft to test the  airframe. The results will be used as a baseline measurement for all five VH-71 production helicopters that make up the first phase, or Increment One, of the program. The VH-71 program has two phases, or increments. Increment One provides five helicopters on an accelerated schedule with improved capabilities over the current, aging fleet. Increment Two will provide a fleet of 23 helicopters that complete the White House requirements for a command and control platform. For related news