Mark I NAAK

The kits are only effective against the nerve agents tabun (GA), sarin (GB), soman (GD) and VX.

Typically, U.S. servicemembers are issued three MARK I Kits when operating in circumstances where chemical weapons are considered a potential hazard.

Along with the three kits are issued one CANA (Convulsive Antidote, Nerve Agent) for simultaneous use.

A newer model, the ATNAA (Antidote Treatment Nerve Agent Auto-Injector),[1] has both the atropine and the pralidoxime in one syringe, allowing for simplified administration.

The use of a Mark 1 or ATNAA kit inhibits the nerve agents' purpose, thereby reducing the number of fatal casualties in the advent of chemical warfare.