Matt Brennan knows how to open eyes to the potential of the experimental jet, the JA-3. He'll pilot it from Nome over the North Pole to Washington, DC and land it on the Pentagon's lap. The distance is beyond the JA-3's tested range. Nor can the craft provide the pressurization needed for flight at 80,000 feet. But Brennan has some modifications in mind. And the courage to put them to the test. Humphrey Bogart plays Brennan in Chain Lightning's lofty mix of adventure and romance. Eleanor Parker, as a World War II flame who reenters Brennan's life, fuels the romance. And the adventure takes wing with a story that, like Breaking the Sound Barrier, the McConnell Story and other postwar films, taps into the era's fascination with jet aviation. Cleared for takeoff.