'Largest aircraft in the world' seen over US. What is it doing?

Pathfinder 1 looks like a blimp, but much bigger. It's part of a wave of interest in "lighter-than-air" or LTA aircraft.
The National Interest

America’s Fastest Army Helicopter Is Also Its Biggest

The Army has no plans to retire the CH-47 Chinook—which, in multiple respects, outdoes every other helicopter in the U.S. military’s fleet. If asked to name the fastest helicopter in the U.S. Army ...
Arizona Daily Star

Quad Tiltrotor could be the next huge thing in cargo aircraft

LANGLEY, Va. — In a cavernous wind tunnel at NASA's Langley Research Center hangs the putty-colored right half of a giant model aircraft, mounted on a big black board like a trophy fish. Engineers ...
Reuters

Japanese navy boosts overseas force projection capability with second big helicopter carrier

YOKOHAMA (Reuters) - Japan's second big helicopter carrier, the Kaga, entered service on Wednesday, giving the nation's military greater ability to deploy beyond its shores as it pushes back against ...