
U.S. Air Force Secretary Frank Kendall said on Nov. 13 that, of the two service legs of the triad, he is more concerned about the Northrop Grumman [NOC] LGM-35A Sentinel next generation ICBM than the company's B-21 Raider strategic stealth bomber. "So far, the B-21 is doing fine,” Kendall told a Center for a New American Security (CNAS) virtual forum. "Sentinel is, quite honestly, struggling a little bit. There are unknown unknowns that are surfacing that are affecting the program…