
NATIONAL HARBOR, Md. — Sentinel, the next nuclear-armed intercontinental ballistic missile, is a “real program,” a senior executive with the rocket’s prime contractor said here Wednesday at an industry conference. “Just yesterday we announced … the casting for the first and the second stage [Sentinel rocket] motors,” James Kowalski, vice president of government programs at Northrop Grumman, said in a panel discussion at the Air and Space Forces Association’s 2022 Air, Space & Cyber Conference. Kowalski referred to Northrop’s manufacture…