CADDO GAP, Ark. — Floodwaters that rose as swiftly as 8 feet an hour tore through a campground packed with vacationing families early Friday, carrying away tents and overturning RVs as campers slept. At least 16 people were killed, and dozens more missing and feared dead. Heavy rains caused the normally quiet Caddo and Little Missouri rivers to climb out of their banks during the night. Around dawn, floodwaters barreled into the Albert Pike Recreation Area, a 54-unit campground in the Ouachita National Forest. At least two dozen people were hospitalized. Authorities rescued dozens more before suspending their search at nightfall Friday. Crews on helicopters, canoes, ATVs and horses were to resume the search at daybreak Saturday, said Arkansas State Police spokesman Bill Sadler. A call center set up for people to report loved ones who may be missing from the campground received inquiries about 73 people Friday, said Arkansas Department of Emergency Management spokesman Chad Stover.