What is one of the warnings associated with the LPU-21 life preserver regarding inflation?

One of the warnings associated with the LPU-21 life preserver is to inflate it after exiting the aircraft. This is crucial because if the life preserver is inflated while inside the aircraft, it can hinder your ability to escape in case of an emergency. By inflating the device outside, you ensure that it functions as intended, providing buoyancy once you are safely in the water. Additionally, it minimizes the risk of becoming trapped or restricting movement within the confined space of the aircraft. Always consider the operational protocols associated with life-saving equipment to enhance safety during emergencies.