This kit allows a single paratrooper to act as medic for a limited amount of time. The user is able to heal himself and those around him, including disabled units, for a total of 25 HP before another one has to be bought. A red cross in his portrait indicates the status of the kit: the more transparent, the more it is used up.
Although, compared to a medic, the healing kit is quite inefficient, it can nevertheless be the deciding factor in saving a soldier's life. During paratrooper challenge, this kit and Heroism are the only ways of regaining health.