From the story:
Rear Adm. Stephen E. Johnson, the Navy’s director of strategic systems programs, removed Block on Friday because of “a loss of confidence in his ability to continue to lead,” said Cmdr. J.A. “Cappy” Surette, a spokesman at the Pentagon.
“An officer in command has a unique position of trust and responsibility, and has a key role in shaping morale, good order and discipline within the command,” Surette said. “Because of this unique position, his immediate superiors must have full confidence in the officer’s judgment and ability to command.”
Surette said there was no “specific issue or incident” that led to Block’s removal and that public safety was not jeopardized at the facility, which assembles, stores and places nuclear weapons on submarines.