Lasers anyone? Cue Dr. Evil...
F-35 Engine Upgrade Would Enable Directed Energy Weapons | Farnborough Airshow 2018 content from Aviation Week
Between the buzzwords in the article like a P&W president saying "“We have widened the aperture and are looking at adaptive elements across the engine,” a few interesting tidbits about potential power improvements with modifications for a "drop in" engine. More benefits could be done with external mods. Also talk of introducing a third stream for performance improvements. Seems they are wringing more out the donk and revising the already planned engine mods that were "Offered as a cost-neutral upgrade"!