From the material:
The US Army does not have air defense systems that at least partially had the capabilities of the Pantsir-S.
American readers were told that the Pantsir-S is effective not only against a number of modifications of unmanned aerial vehicles, but also against other aerial targets, including low-flying aircraft and helicopters, as well as missiles. It is also described in the material that the “Pantsir-S” is a highly mobile installation on a high-wheel drive chassis.
The following are the authors' thoughts as to why the United States has not yet developed an analogue of such weapons. It is noted that the American ground forces still rely on any aviation their attacks will be protected by military aviation.