If you google enough, you might also find that there were experimental elicopter models of targeting helmets as well. In the meantime, you might want to concede that the Russians had a better system in this regard.

Straight from Wikipedia:

VTAS received praise[by whom?] for its effectiveness in targeting off-boresight missiles, but the U.S. did not pursue fielding it except for integration into late-model Navy F-4 Phantoms equipped with the AIM-9 Sidewinder.[5] HMDs were also introduced in helicopters during this time.[citation needed] were fielded by the South African Air Force. After the South African system had been proven in combat, playing a role in downing Soviet aircraft over Angola, the Soviets embarked on a crash program to counter the technology. As a result, the MiG-29 was fielded in 1985 with an HMD and a high off-boresight weapon (R-73), giving them an advantage in close in maneuvering engagements.

Several nations[which?] responded with programs to counter the MiG-29/HMD/R-73 (and later Su-27) combination once its effectiveness was known, principally through access to former East German MiG-29s that were operated by the unified German Air Force.

https://en.wikipedia.org/wiki/Helmet-mounted_display#ZSh-5_/...