Final answer:
E-1 through E-3 personnel typically undergo a sea bag inspection upon arrival at a new duty station to ensure their gear meets military standards.
Step-by-step explanation:
When E-1 through E-3 personnel should stand a sea bag inspection is typically upon arrival at a new duty station. The purpose of this inspection is to ensure that all personnel have the required uniform items and equipment, and that these items are serviceable and fit properly. The sea bag inspection is an integral part of maintaining military readiness and standards.