The supply chain woes that sent costs soaring and spurred shortages of everything from toilet paper to passenger cars are easing for retail-focused industries, but remain stubbornly persistent in important growth sectors like autos, machinery, defense and non-residential construction, experts said. "One of the big issues as we're trying to ramp up the military industrial base is having enough electronic components," Miller said. Companies that make war weapons like shoulder-fired Javelin and Stinger missiles are awaiting U.S. funding before starting new production for Ukraine. "Any general shortage in semiconductors will affect defense," said Brad Martin, director of Rand Corp's National Security Supply Chain Institute. "As we've moved through the past year or so, we have seen gradual improvement in our supply chain, including semiconductors ... Short-term disruptions will continue to happen," GM spokesman Dan Flores told Reuters in an email.

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