The Sentinel intercontinental ballistic missile program might be the largest effort undertaken by the Air Force, service Secretary Frank Kendall said today, but it may be at risk of further disruptions . “Sentinel, I think, is quite honestly struggling a little bit,” Kendall said during a discussion at the Center for a New American Security. “There are unknown unknowns that are surfacing that are affecting the program, and the department’s going to have to work its way through.” As the...
