Duty life refers to the recommended time ammunition can be expected to be reliable, normally expressed in months. Which term is this definition for?

• A. Escort
• B. Duty life
• C. EMS system
• D. Diversion

Answer: (B)

Duty life describes the period during which ammunition should remain reliable when stored under standard conditions, usually expressed in months. This concept accounts for aging and potential degradation of primers, powder, and casings, and helps agencies schedule rotation and replacement to ensure dependable performance in the field. Proper storage—stable temperature, low humidity, and intact packaging—helps maximize duty life, while poor storage can shorten it. The other terms refer to unrelated ideas—escort is about accompanying someone or something, an EMS system relates to emergency medical services, and diversion means redirecting something away from its intended route—so they do not describe how long ammunition stays dependable.