Which item is included in CLS contents but not in JFAK contents?

• A. NPA
• B. Vent chest seal
• C. Chest seal/NDC
• D. Gauze and rigid eye shield

Answer: (B)

Vent chest seal is included in CLS contents because treating chest injuries is a priority for a Combat Lifesaver in the field. A vented chest seal works for an open chest wound by occluding the wound to prevent air from rushing into the pleural space, while the vent allows air to escape during exhalation. This reduces the risk of developing a tension pneumothorax without letting air be sucked back in during inspiration, which is critical in a real thoracic injury scenario.

The JFAK is designed for basic, rapid first aid by non-medical personnel and typically emphasizes straightforward bleeding control and wound care. It does not routinely include a vented chest seal, since managing penetrating chest trauma at that level of care isn’t its primary function. So the vent chest seal is the item that distinguishes CLS contents from JFAK contents. Other common items like gauze, basic dressings, and eye protection appear in both, but the vented chest seal is the key difference.