WASHINGTON, Sept 10 (Reuters) - The head of aerospace

and defense giant RTX said on Tuesday that global supply

chains remain stretched in the wake of the COVID-19 pandemic and

finding qualified labor for aerospace factories remains a "huge"

challenge.

Chief Executive Greg Hayes also told the Global Aerospace

Summit hosted by the U.S. Chamber of Commerce that RTX is also

researching alternatives to its roughly 2,000 Chinese suppliers

in the event of any sudden worsening of geopolitical tensions.