POTOMAC, Md. – The Maryland State Police Aviation Command rescued four kayakers who became stranded in rough waters in the Potomac River on Sunday. MSPAC’s Trooper 3, a crew based in Frederick, conducted the hoist missions with assistance on the ground from Montgomery County swift water rescue personnel. First responders requested an aerial rescue due to the inability to get rescue boats to the area of swift-moving water, where the kayakers were stranded.