The Navy is proposing a new three-year, consolidated contract to buy F/A-18E/F Super Hornet aircraft, a $3.7 billion deal that locks in orders through 2021, as a hedge against the F-35 Joint Strike Fighter taking longer than planned to be fielded. The service's fiscal year 2019 budget request seeks permission from Congress to negotiate a multiyear contract to buy 72 aircraft -- a new variant of the Super Hornet called the Block III -- under a single fixed-price, incentive-fee contract...