Recently, a photo of China's latest attack helicopter, touted as the counterpart to the American AH-64 Apache, has emerged online. The Z-21, as it is known, was captured flying for the first time.

The Z-10 is an attack helicopter designed for air-to-ground assaults with limited air-to-air abilities, very similar to the U.S. Apache AH-64. The Z-10 helicopter has a standard gunship ...