Southwest Airlines has announced a new safety policy requiring passengers to keep portable chargers visible during flights. This policy, which prohibits the use of portable chargers inside carry-on bags, is aimed at reducing the fire risk associated with lithium batteries. Passengers will need to keep their chargers in plain sight while in use, making it the first such rule implemented by a major U.S. airline. The move comes in response to a series of battery-related fire incidents. Experts believe this new approach may set a trend in the airline industry as safety remains a top priority.