Could the Navy's new fleet of maritime patrol aircraft, the P-8 Poseidon, pick off the crown jewels of the U.S. military's intelligence, surveillance and reconnaissance payload inventory from the Air Force when the U-2 Dragon Lady -- the venerable high-flying Cold War spy plane -- retires in fiscal year 2019? That's the question lawmakers have asked and want the Navy to answer. A provision in the Fiscal Year 2017 defense authorization conference bill -- approved by the House last week...