 Boeing is making a big decision about its future. The jet makers announced plans to buy key supplier Spirit Aerosystems for almost $4.75 billion. The company says the move will improve plane quality and safety with increasing scrutiny by airlines, Congress, and the Department of Justice. Speaking of the Justice Department, at once Boeing, too, pleaded guilty to criminal fraud in connection with two deadly plane crashes involving its 737 MAX jetliners in 2018 and 2019.