What is the first action you should take after inflating a flotation device in water?

The first action you should take after inflating a flotation device in water is to disconnect the chest strap and RSL (Reserve Static Line). This step is crucial because it ensures that you are not still connected to the parachute or any other equipment that could hinder your mobility and safety in the water. Being tethered to these items can create a risk of entanglement or dragging you under the water, especially if the parachute is still partially deployed or if it becomes submerged.

Once you've disconnected from any potentially hazardous equipment, you can then focus on your safety and the actions that follow, such as signaling for help or swimming. However, the disconnection is the priority to ensure that you can maneuver freely and effectively in the water.