AH-1Z Viper

The AH-1Z Viper is a commonly seen aircraft and a type of helicopter, debuting in Military Aircraft Passages 1. It makes large roles in the first two episodes, but starting on Military Aircraft Passages 3, its role gets significantly smaller.

Physical description
The AH-1Z Viper is an attack helicopter, with four blades on its main and tail rotor. On closer inspection, a gun can be seen on the bottom area of its front, and rocket launchers can sometimes be seen.

During its passage, the AH-1Z Viper makes distinctive rumbling sounds, just like its utility counterpart, the UH-1Y Venom. However, unlike the UH-1Y Venom, the AH-1Z Viper's sounds are slightly higher pitched.