The hearing comes on the heels of a Government Accountability Office report this month that found just one in four F-35s were fully mission capable.
The first ever deployment of U.S. Marine Corps F-35B Lightning IIs to Finland proved to be a memorable one.
The pilot ejected and was taken to the hospital for treatment of minor injuries.
The United States reportedly plans to significantly reduce the aircraft and warships it makes available for NATO operations in Europe.
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