Their communities devastated from last weekend’s storm, many are in shelters in Anchorage and facing life in a completely different world.

Unresolved issues and flare-ups of violence threaten to destabilize the fragile agreement.

The mishap, during an anniversary celebration for the Marine Corps attended by the vice president and defense secretary, underscores safety concerns that Gov. Gavin Newsom voiced before Saturday’s event at Camp Pendleton.