"While we count success one mission at a time, we have been able to count on the Delta II's success 97 times in a row over the last decade. This is a tribute to our dedicated ULA employees, our supplier teammates and our NASA Launch Services Program customer who ensure mission success is the focus of each and every launch."
Source: Michael Gass, ULA president and CEO, in comments made after NASA's Launch Services Program chose United Launch Alliance's (ULA) proven Delta II launch vehicle for three future missions.