Final answer:
In river rescue operations, inappropriate types of footwear like flip-flops or loose shoes should not be worn. Thermal protection should not be made of cotton. Instead, securely fastened, sturdy footwear and insulating, water-appropriate thermal gear should be utilized.
Step-by-step explanation:
When engaging in river rescue operations, it is crucial to wear appropriate gear for personal protection and to maximize efficiency in rescue efforts. Certain types of footwear and thermal protection are not suitable for river rescue activities.
Footwear that is not securely attached to the feet, such as flip-flops or loose slip-on shoes, should not be worn as they can easily come off and result in a loss of footing or create an entanglement hazard. Instead, sturdy, closed-toe shoes with a good grip that can securely fasten to the feet, like water shoes or river sandals with heel straps, are recommended.
Regarding thermal protection, materials like cotton should be avoided as they absorb water and can greatly hinder mobility and lead to hypothermia in cold water conditions. Instead, rescue personnel should wear materials that provide insulation even when wet, such as neoprene or modern synthetic fibers designed for aquatic environments.
Thermal protection should be appropriate for the water temperature, not just the air temperature, to prevent the risk of hypothermia during prolonged exposure to cold water. Carefully selected personal protective equipment (PPE) is vital in ensuring the safety and effectiveness of the rescuers.